198 lines
8.3 KiB
JSON
198 lines
8.3 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"cveId": "CVE-2026-32853",
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"state": "PUBLISHED",
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"assignerShortName": "VulnCheck",
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"dateReserved": "2026-03-16T18:11:41.759Z",
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"datePublished": "2026-03-24T17:30:40.061Z",
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"dateUpdated": "2026-11-08T14:02:00.136Z"
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"shortName": "VulnCheck",
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"dateUpdated": "2026-11-08T14:02:00.136Z"
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},
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"title": "LibVNCServer UltraZip Encoding Heap Out-of-bounds Read",
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"descriptions": [
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{
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"lang": "en",
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"value": "LibVNCServer versions 0.9.15 and prior (fixed in commit 009008e) contain a heap out-of-bounds read vulnerability in the UltraZip encoding handler that allows a malicious VNC server to cause information disclosure or application crash. Attackers can exploit improper bounds checking in the HandleUltraZipBPP() function by manipulating subrectangle header counts to read beyond the allocated heap buffer.",
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"supportingMedia": [
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}
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]
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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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"lang": "en",
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"cweId": "CWE-125",
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"description": "CWE-125 Out-of-bounds read",
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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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"affected": [
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{
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"vendor": "LibVNC",
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"product": "LibVNCServer",
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"repo": "https://github.com/LibVNC/libvncserver",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThanOrEqual": "0.9.15",
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"versionType": "semver"
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},
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{
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"status": "unaffected",
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"version": "009008e2f4d5a54dd71f422070df3af7b3dbc931",
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"versionType": "git"
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"versionEndIncluding": "0.9.15"
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}
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}
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}
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{
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "LOW",
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"subConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "LOW",
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"subAvailabilityImpact": "NONE",
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"exploitMaturity": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"valueDensity": "NOT_DEFINED",
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"vulnerabilityResponseEffort": "NOT_DEFINED",
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"providerUrgency": "NOT_DEFINED",
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"version": "4.0",
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"baseSeverity": "MEDIUM",
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"baseScore": 6.9,
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"
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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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"url": "https://github.com/LibVNC/libvncserver/security/advisories/GHSA-87q7-v983-qwcj",
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"name": "GitHub Security Advisory (GHSA-87q7-v983-qwcj)",
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"tags": [
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"vendor-advisory"
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]
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},
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{
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"url": "https://github.com/LibVNC/libvncserver/commit/009008e2f4d5a54dd71f422070df3af7b3dbc931",
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"tags": [
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"patch"
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]
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},
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{
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"url": "https://www.vulncheck.com/advisories/libvncserver-ultrazip-encoding-heap-out-of-bounds-read",
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"tags": [
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"third-party-advisory"
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Kazuma Matsumoto, a security researcher at GMO Cybersecurity by IERAE, Inc.",
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"type": "finder"
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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},
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"x_generator": {
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"engine": "Vulnogram 1.0.1"
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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/LibVNC/libvncserver/security/advisories/GHSA-87q7-v983-qwcj",
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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": "2026-03-25T13:41:12.751342Z",
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"id": "CVE-2026-32853",
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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": "yes"
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},
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{
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"Technical Impact": "partial"
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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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}
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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": "2026-03-25T13:41:15.171Z"
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}
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}
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]
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}
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} |