CVE-2026-91957

LOW 3.1

FreeRDP before 3.31.0 Use-After-Free via smartcard worker

CVSS Score

3.1

EPSS Score

0.0%

EPSS Percentile

0th

FreeRDP before 3.31.0 contains a use-after-free vulnerability in the smartcard RDPDR device handler when worker thread creation fails after device registration. Attackers can trigger thread creation failure during channel setup to cause device pointer deallocation while devman retains a reference, leading to crash or code execution.

CWE	CWE-416
Vendor	freerdp
Product	freerdp
Published	Sep 15, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Affected Versions

FreeRDP / FreeRDP

0 < 3.31.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-j5mq-3349-gwmm vulncheck.com: https://www.vulncheck.com/advisories/freerdp-before-3.31.0-use-after-free-via-smartcard-worker

Credits

🔍 kimaiden1984-boop