{"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"],"published":"2026-10-17","updated":"2026-10-17","sourceUpdated":"2026-10-17T18:46:08.393Z","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"}],"tags":["cve.org"],"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.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":40.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}