CVE-2026-91957

FreeRDP before 3.31.0 Use-After-Free via smartcard worker

LOW
3.1
CVSS Score
Published: September 15, 2026 at 03:18 PM UTC
Updated: September 24, 2026 at 12:27 PM UTC
1 product affected across 1 vendorFreeRDP

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Severity
LOW3.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.31.0
Vendor states this is fixed in 3.31.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.1LOWVulnCheck
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-416

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