Medium severity6.5NVD Advisory· Published Sep 15, 2026· Updated Sep 24, 2026
CVE-2026-91945
CVE-2026-91945
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2Patches
Vulnerability mechanics
References
3- github.com/FreeRDP/FreeRDP/commit/9626564421df72c84f891afdbc0b20bf702f369fnvdPatch
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q65v-4w7q-hx3rnvdExploitMitigationPatchVendor Advisory
- www.vulncheck.com/advisories/freerdp-before-3.31.0-out-of-bounds-read-via-smartcard-atrnvdThird Party Advisory
News mentions
1- FreeRDP: 20 Vulnerabilities Disclosed, Including Critical RDSTLS BypassVypr Intelligence · Sep 15, 2026