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VULNERABILITIES

CVE-2026-91945 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q65v-4w7q-hx3r CISA-ADPExploitMitigationPatchVendor Advisory
https://github.com/FreeRDP/FreeRDP/commit/9626564421df72c84f891afdbc0b20bf702f369f [email protected]Patch
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q65v-4w7q-hx3r [email protected]ExploitMitigationPatchVendor Advisory
https://www.vulncheck.com/advisories/freerdp-before-3.31.0-out-of-bounds-read-via-smartcard-atr [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-125Out-of-bounds Read[email protected]

Affected Products

ProductVersions
freerdp freerdp
>= 3.28.0, < 3.31.0

CPE

  • cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-91945
NVD Published Date:
Sep 15, 2026
NVD Last Modified:
Sep 24, 2026
Source:
[email protected]
CVE-2026-91945 Details - Not Deferred