CVE-2026-91945CWE-125

CVE-2026-91945

Medium · published September 15, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
46.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00579 · 46.9th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-09-15T20:17Z
Affected products (1)
ProductVersionsFixed in
freerdp/freerdp≥ 3.28.0, < 3.31.03.31.0
References (4)
https://github.com/FreeRDP/FreeRDP/commit/9626564421df72c84f891afdbc0b20bf702f369f · [email protected]https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q65v-4w7q-hx3r · [email protected]https://www.vulncheck.com/advisories/freerdp-before-3.31.0-out-of-bounds-read-via-smartcard-atr · [email protected]https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q65v-4w7q-hx3r · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 1%
    epss
  • 15 SEP 15:18Z
    FreeRDP before 3.31.0 Out-of-bounds Read via Smartcard ATR
    cvelistv5