CVE-2026-91945
mediumFreeRDP 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…
Vendor / product: Freerdp — freerdp
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
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-09-15 16:17
Modified: 2026-09-24 12:13
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 06:53 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
freerdp / freerdp ≥3.28.0 <3.31.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/FreeRDP/FreeRDP/commit/9626564421df72c84f891afdbc0b20bf702f369f
Patch / mitigation: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q65v-4w7q-hx3r
Patch / mitigation: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q65v-4w7q-hx3r
References
- https://github.com/FreeRDP/FreeRDP/commit/9626564421df72c84f891afdbc0b20bf702f369f disclosure@vulncheck.com
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q65v-4w7q-hx3r disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/freerdp-before-3.31.0-out-of-bounds-read-via-smartcar... disclosure@vulncheck.com
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q65v-4w7q-hx3r 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:53 UTC · record ↗