CVE-2026-91945
MEDIUMCVSS 6.5Description
FreeRDP versions before 3.31.0 contain an out-of-bounds read vulnerability in smartcard response decoders that fail to validate ATR length fields against fixed inline arrays. Authenticated RDP clients can send oversized ATR lengths in PAKID_CORE_DEVICE_IOCOMPLETION responses to trigger reads past stack or heap objects, causing process termination.
Timeline
Published:September 15th, 2026 4:17 PM
Last modified:September 24th, 2026 12:13 PM
CVSS Scoring
CVSS v3: 6.5 (MEDIUM)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Software
From NVD CPE configuration data
Vendors
freerdp
Products
freerdp
Weaknesses (CWE)
References & Reports
Advisories, patches, and third-party reports
- https://github.com/FreeRDP/FreeRDP/commit/9626564421df72c84f891afdbc0b20bf702f369fPatch
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q65v-4w7q-hx3rExploit
- https://www.vulncheck.com/advisories/freerdp-before-3.31.0-out-of-bounds-read-via-smartcard-atrThird Party Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q65v-4w7q-hx3rExploit
Source: NIST NVD · Data may lag official sources by up to one minute