310 lines
13 KiB
JSON
310 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-44421",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-05-06T14:40:00.953Z",
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"datePublished": "2026-05-29T19:40:25.492Z",
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"dateUpdated": "2026-07-27T12:05:30.051Z"
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},
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"containers": {
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"cna": {
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"title": "FreeRDP RDPGFX CacheToSurface heap-buffer-overflow via clamped-rectangle validation bypass",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-122",
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"lang": "en",
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"description": "CWE-122: Heap-based Buffer Overflow",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 8.8,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-p6r2-4hgm-m6ff",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-p6r2-4hgm-m6ff"
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}
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],
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"affected": [
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{
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"vendor": "FreeRDP",
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"product": "FreeRDP",
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"versions": [
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{
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"version": "< 3.26.0",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-05-29T19:40:25.492Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client by sending crafted RDPGFX PDUs. The bug is in gdi_CacheToSurface: it validates a destination rectangle that is clamped to UINT16_MAX, but then performs the copy using the original cacheEntry->width/height. This can cause a large out-of-bounds heap write and may lead to client crashes or code execution. This bug is reachable from a malicious RDP server, but only when the client has RDPGFX enabled. This vulnerability is fixed in 3.26.0."
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}
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],
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"source": {
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"advisory": "GHSA-p6r2-4hgm-m6ff",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-p6r2-4hgm-m6ff",
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"tags": [
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"exploit"
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]
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}
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],
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-06-01T00:00:00+00:00",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3",
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"id": "CVE-2026-44421"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-06-02T03:55:49.461Z"
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}
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},
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{
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"affected": [
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{
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"cpes": [
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"cpe:/o:redhat:enterprise_linux:10.2"
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],
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"defaultStatus": "affected",
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"packageName": "freerdp",
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"product": "Red Hat Enterprise Linux 10",
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"vendor": "Red Hat",
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"versions": [
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{
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"lessThan": "*",
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"status": "unaffected",
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"version": "2:3.10.3-12.el10_2.6",
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"versionType": "rpm"
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}
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]
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},
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{
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"cpes": [
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"cpe:/o:redhat:enterprise_linux:6"
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],
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"defaultStatus": "unknown",
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"packageName": "freerdp",
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"product": "Red Hat Enterprise Linux 6",
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"vendor": "Red Hat"
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},
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{
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"cpes": [
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"cpe:/o:redhat:enterprise_linux:7"
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],
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"defaultStatus": "unaffected",
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"packageName": "freerdp",
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"product": "Red Hat Enterprise Linux 7",
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"vendor": "Red Hat"
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},
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{
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"cpes": [
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"cpe:/o:redhat:enterprise_linux:8"
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],
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"defaultStatus": "unaffected",
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"packageName": "freerdp",
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"product": "Red Hat Enterprise Linux 8",
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"vendor": "Red Hat"
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},
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{
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"cpes": [
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"cpe:/o:redhat:enterprise_linux:9"
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],
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"defaultStatus": "unaffected",
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"packageName": "freerdp",
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"product": "Red Hat Enterprise Linux 9",
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"vendor": "Red Hat"
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}
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],
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"datePublic": "2026-05-29T19:40:25.492Z",
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"descriptions": [
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{
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"lang": "en",
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"value": "A heap-buffer-overflow vulnerability exists in FreeRDP when handling Remote Desktop Protocol Graphics (RDPGFX). A malicious or compromised RDP server can exploit this flaw by sending specially crafted graphics packets to a connected client, potentially crashing the client application (Denial of Service) or executing arbitrary code on the user's machine."
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}
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],
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"metrics": [
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{
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"other": {
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"content": {
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"namespace": "https://access.redhat.com/security/updates/classification/",
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"value": "Important"
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},
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"type": "Red Hat severity rating"
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}
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},
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 8.8,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
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"version": "3.1"
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},
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"format": "CVSS"
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-787",
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"description": "Out-of-bounds Write",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"references": [
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{
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"tags": [
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"vdb-entry",
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"x_refsource_REDHAT"
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],
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"url": "https://access.redhat.com/security/cve/CVE-2026-44421"
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},
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{
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"name": "RHBZ#2483471",
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"tags": [
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"issue-tracking",
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"x_refsource_REDHAT"
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],
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2483471"
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},
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{
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"tags": [
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"x_sadp-csaf-vex"
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],
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"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44421.json"
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},
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{
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"tags": [
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"vendor-advisory",
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"x_refsource_REDHAT"
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],
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"url": "https://access.redhat.com/errata/RHSA-2026:46393"
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},
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{
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"tags": [
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"vendor-advisory",
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"x_refsource_REDHAT"
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],
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"url": "https://access.redhat.com/errata/RHSA-2026:36203"
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}
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],
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"solutions": [
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{
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"lang": "en",
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"value": "RHSA-2026:46393: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)"
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},
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{
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"lang": "en",
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"value": "RHSA-2026:36203: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)"
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}
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],
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"timeline": [
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{
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"lang": "en",
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"time": "2026-05-29T21:01:24.644Z",
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"value": "Reported to Red Hat."
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},
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{
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"lang": "en",
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"time": "2026-05-29T19:40:25.492Z",
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"value": "Made public."
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}
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],
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"title": "freerdp: FreeRDP: Arbitrary code execution via crafted RDPGFX PDUs",
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"workarounds": [
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{
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"lang": "en",
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"value": "To mitigate this vulnerability, disable the RDPGFX graphics acceleration feature in your FreeRDP client configuration. Additionally, avoid using FreeRDP to connect to untrusted or unknown external servers. This may cause a temporary disruption in service for your users."
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}
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],
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"x_adpType": "supplier",
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"x_generator": {
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"engine": "sadp-cli 1.0.0"
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},
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"providerMetadata": {
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"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
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"shortName": "redhat-SADP",
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"dateUpdated": "2026-07-27T12:05:30.051Z"
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}
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}
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]
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}
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} |