225 lines
9.4 KiB
JSON
225 lines
9.4 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-2026-14191",
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"assignerOrgId": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
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"state": "PUBLISHED",
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"assignerShortName": "securin",
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"dateReserved": "2026-06-30T08:32:07.249Z",
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"datePublished": "2026-07-01T02:41:39.316Z",
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"dateUpdated": "2026-07-09T04:47:54.319Z"
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},
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"containers": {
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"cna": {
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"title": "WinRAR / UnRAR RAR5 recovery-volume (.rev) out-of-bounds heap write in RecVolumes5::ReadHeader",
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"descriptions": [
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{
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"lang": "en",
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"value": "An out-of-bounds heap write exists in the RAR5 recovery-volume (.rev) parser in WinRAR and UnRAR (RecVolumes5::ReadHeader in recvol5.cpp). The RecItems vector is sized only when the first .rev file in a set is processed; subsequent .rev files supply an independent RecNum value that is validated against that file's own TotalCount field but never against the actual size of RecItems. A crafted set of two or more .rev files can therefore write an attacker-controlled 32-bit value (the header's RevCRC field) to RecItems[RecNum] at an attacker-controlled offset up to 65534 * sizeof(RecVolItem) bytes past the allocation, corrupting adjacent heap objects. Triggering requires the victim to run a recovery/test operation on an attacker-supplied .rev set (for example 'unrar t x.part1.rev', WinRAR 'Repair archive', or auto-recovery when extracting a volume set with a missing .rar part). This is the RAR5-path sibling of CVE-2023-40477 (which was fixed in the RAR3 path only in WinRAR 6.23). Fixed in WinRAR / RAR 7.23."
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}
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],
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"affected": [
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{
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"vendor": "RARLAB",
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"product": "WinRAR",
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"platforms": [
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"Windows"
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],
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"defaultStatus": "unaffected",
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"versions": [
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{
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"version": "0",
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"lessThan": "7.23",
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"status": "affected",
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"versionType": "custom"
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}
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]
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},
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{
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"vendor": "RARLAB",
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"product": "RAR",
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"platforms": [
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"Windows",
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"Linux",
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"macOS"
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],
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"defaultStatus": "unaffected",
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"versions": [
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{
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"version": "0",
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"lessThan": "7.23",
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"status": "affected",
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"versionType": "custom"
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}
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]
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},
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{
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"vendor": "RARLAB",
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"product": "UnRAR",
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"platforms": [
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"Windows",
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"Linux",
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"macOS"
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],
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"defaultStatus": "unaffected",
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"versions": [
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{
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"version": "0",
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"lessThanOrEqual": "7.21",
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"status": "affected",
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"versionType": "custom"
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}
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]
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},
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{
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"vendor": "RARLAB",
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"product": "UnRAR.dll",
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"platforms": [
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"Windows"
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],
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"defaultStatus": "unaffected",
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"versions": [
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{
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"version": "0",
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"lessThan": "7.23",
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"status": "affected",
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"versionType": "custom"
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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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"description": "CWE-787 Out-of-bounds Write",
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"cweId": "CWE-787",
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"type": "CWE"
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},
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{
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"lang": "en",
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"description": "CWE-129 Improper Validation of Array Index",
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"cweId": "CWE-129",
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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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"format": "CVSS",
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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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://www.rarlab.com/download.htm",
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"name": "WinRAR / RAR 7.23 download (fixed release, 2026-06-30)",
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"tags": [
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"patch",
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"vendor-advisory"
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]
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},
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{
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-40477",
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"name": "CVE-2023-40477 - Sibling RAR3-path vulnerability fixed in WinRAR 6.23",
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"tags": [
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"related"
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]
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},
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{
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"url": "https://www.securin.io/zero-days/cve-2026-14191-winrar-unrar-rar5-recovery-volume-rev-out-of-bounds-heap-write-in-recvolumes5-readheader"
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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": "Arjun Basnet from Securin",
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"type": "finder"
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-100",
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"descriptions": [
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{
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"lang": "en",
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"value": "Overflow Buffers - a controlled out-of-bounds heap write with attacker-controlled offset and attacker-influenced value, giving a memory-corruption primitive that can be used to crash the process (verified DoS) and, per the reporter's assessment mirroring the RAR3 sibling CVE-2023-40477, can plausibly be leveraged toward remote code execution in the context of the current user. Code execution was not demonstrated by the reporter."
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}
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]
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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": "2026-06-03T02:08:00.000Z",
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"value": "Vulnerability reported to RARLAB (Eugene Roshal) by Securin"
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},
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{
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"lang": "en",
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"time": "2026-06-03T20:01:00.000Z",
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"value": "RARLAB confirmed the findings after independent source review"
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},
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{
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"lang": "en",
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"time": "2026-06-30T07:51:00.000Z",
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"value": "WinRAR / RAR 7.23 released with .rev processing fix"
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},
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{
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"lang": "en",
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"time": "2026-06-30T00:00:00.000Z",
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"value": "CVE-2026-14191 reserved by Securin CNA"
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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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"providerMetadata": {
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"orgId": "33c584b5-0579-4c06-b2a0-8d8329fcab9c",
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"shortName": "securin",
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"dateUpdated": "2026-07-09T04:47:54.319Z"
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}
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},
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"adp": [
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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": "2026-07-01T13:07:23.906784Z",
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"id": "CVE-2026-14191",
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"options": [
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{
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"Exploitation": "none"
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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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}
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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": "2026-07-01T13:07:52.685Z"
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}
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}
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]
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}
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} |