{"id":"CVE-2026-91957","title":"FreeRDP before 3.31.0 contains a use-after-free vulnerability in the smartcard RDPDR device handler when worker thread creation fails after device registration","summary":"FreeRDP before 3.31.0 contains a use-after-free vulnerability in the smartcard RDPDR device handler when worker thread creation fails after device registration. Attackers can trigger thread creation failure during channel setup to cause …","severity":"low","cvss":3.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L","cwe":["CWE-416","CWE-825"],"vendor":"FreeRDP","product":"FreeRDP","affected":["FreeRDP < 3.31.0"],"published":"2026-09-15","updated":"2026-09-17","sourceUpdated":"2026-09-17T15:16:57.773","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-91957","references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-j5mq-3349-gwmm","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/freerdp-before-3.31.0-use-after-free-via-smartcard-worker","label":"disclosure@vulncheck.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-91957.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-91957"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2533939"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-91957"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91957"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-17T14:56:00.696796Z"},"epss":0.00327,"epssPercentile":0.25995,"ingestedAt":"2026-09-15T15:39:12.917Z","slug":"CVE-2026-91957","body":"## Overview\n\nFreeRDP before 3.31.0 contains a use-after-free vulnerability in the smartcard RDPDR device handler when worker thread creation fails after device registration. Attackers can trigger thread creation failure during channel setup to cause device pointer deallocation while devman retains a reference, leading to crash or code execution.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-91957.json)","depth":"sunlit","depthScore":17,"depthScoreParts":{"impact":17.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}