{"id":"CVE-2026-91952","state":"PUBLISHED","title":"FreeRDP before 3.31.0 Denial of Service via pool_decode_rect","description":"FreeRDP versions before 3.31.0 contain an infinite-loop denial of service in the pool_decode_rect function when decoding AVC444 metablocks with more region rectangles than preallocated worker array size. A malicious RDP server can send crafted AVC444 graphics updates causing the threaded decode path to loop indefinitely, consuming CPU and preventing normal client operation.","publishedAt":"2026-09-15T15:18:09.203Z","updatedAt":"2026-09-17T14:55:14.149Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["FreeRDP FreeRDP"],"affected":[{"vendor":"FreeRDP","product":"FreeRDP","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.31.0","versionType":"semver"},{"version":"3.31.0","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-m85m-3qxv-63h5","https://www.vulncheck.com/advisories/freerdp-before-3.31.0-denial-of-service-via-pool-decode-rect"],"weaknesses":["CWE-835"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/91xxx/CVE-2026-91952.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-91952","state":"PUBLISHED","datePublished":"2026-09-15T15:18:09.203Z","dateUpdated":"2026-09-17T14:55:14.149Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-15T11:07:34.398Z"},"containers":{"cna":{"title":"FreeRDP before 3.31.0 Denial of Service via pool_decode_rect","descriptions":[{"lang":"en","value":"FreeRDP versions before 3.31.0 contain an infinite-loop denial of service in the pool_decode_rect function when decoding AVC444 metablocks with more region rectangles than preallocated worker array size. A malicious RDP server can send crafted AVC444 graphics updates causing the threaded decode path to loop indefinitely, consuming CPU and preventing normal client operation."}],"affected":[{"vendor":"FreeRDP","product":"FreeRDP","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.31.0","versionType":"semver"},{"version":"3.31.0","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-m85m-3qxv-63h5","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-m85m-3qxv-63h5)"},{"url":"https://www.vulncheck.com/advisories/freerdp-before-3.31.0-denial-of-service-via-pool-decode-rect","name":"VulnCheck Advisory: FreeRDP before 3.31.0 Denial of Service via pool_decode_rect","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-835","lang":"en","description":"Loop with Unreachable Exit Condition ('Infinite Loop')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-09-15T15:18:09.203Z"},"datePublic":"2026-09-01T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*","versionEndExcluding":"3.31.0"}]}]}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-m85m-3qxv-63h5","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-17T14:53:50.298567Z","id":"CVE-2026-91952","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-17T14:55:14.149Z"}}]}}}