Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/FreeRDP/FreeRDP/commit/9626564421df72c84f891afdbc0b20bf702f36
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q65v-4w7q-hx3r
- https://www.vulncheck.com/advisories/freerdp-before-3.31.0-out-of-bounds-read-vi
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q65v-4w7q-hx3r
FAQ
What is CVE-2026-91945?
CVE-2026-91945 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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...
How severe is CVE-2026-91945?
CVE-2026-91945 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-91945?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.