{"id":"CVE-2026-111880","title":"FreeRDP 2.0.0 before 3.32.0 Heap Out-of-Bounds Write via NTLM MIC Offset","summary":"FreeRDP versions from 2.0.0 before 3.32.0 contain a heap out-of-bounds write in the server hash-callback NTLM path that fails to validate the MIC offset. Unauthenticated attackers can send a crafted AUTHENTICATE_MESSAGE with a backward s…","severity":"high","cvss":7.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","cvssSource":"cna","cwe":["CWE-787"],"vendor":"FreeRDP","product":"FreeRDP","affected":["FreeRDP >= 2.0.0 < 3.32.0"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-19T15:35:23.400734Z"},"published":"2026-10-17","updated":"2026-10-19","sourceUpdated":"2026-10-19T16:40:26.597Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111880","references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cmgx-558f-vh67","label":"GitHub Security Advisory (GHSA-cmgx-558f-vh67)"},{"url":"https://www.vulncheck.com/advisories/freerdp-2.0.0-before-3.32.0-heap-out-of-bounds-write-via-ntlm-mic-offset","label":"VulnCheck Advisory: FreeRDP 2.0.0 before 3.32.0 Heap Out-of-Bounds Write via NTLM MIC Offset"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-111880.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-111880"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554625"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-111880"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111880"}],"tags":["cve.org","csaf","vex","red-hat"],"epss":0.00321,"epssPercentile":0.24907,"ingestedAt":"2026-10-17T19:08:56.993Z","slug":"CVE-2026-111880","body":"## Overview\n\nFreeRDP versions from 2.0.0 before 3.32.0 contain a heap out-of-bounds write in the server hash-callback NTLM path that fails to validate the MIC offset. Unauthenticated attackers can send a crafted AUTHENTICATE_MESSAGE with a backward session-key offset and MIC offset to write 16 zero bytes beyond the allocation.\n\n## Affected\n\n- `FreeRDP >= 2.0.0 < 3.32.0`\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** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-111880.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":40.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}