CVE-2026-91947 FreeRDP - Use After Free

FreeRDP server < 3.31.0 contains a use-after-free vulnerability caused by dereferencing a channel pointer after releasing synchronization lock in DRDYNVC parser, letting authenticated clients trigger heap-use-after-free via race condition.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.31% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-362

Vendor fix

Upgrade to version 3.31.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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