CVE-2026-91946CWE-908

CVE-2026-91946

Medium · published September 15, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
43.9
In the wild
Unconfirmed
What it is

FreeRDP versions before 3.31.0 contain an information disclosure vulnerability in the RDPGFX server's ResetGraphics PDU serializer that fails to initialize padding bytes in the fixed 340-byte wire format. Attackers can receive uninitialized heap memory including live pointers and GLib function addresses transmitted in the PDU, defeating heap ASLR and disclosing the GLib module base address.

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:H/I:N/A:N
CVSS v4.0
7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00529 · 43.9th percentile
Weakness
CWE-908 · Use of Uninitialized Resource
Published
2026-09-15T20:17Z
Affected products (1)
ProductVersionsFixed in
freerdp/freerdp≥ 2.0.0, < 3.31.03.31.0
References (4)
https://github.com/FreeRDP/FreeRDP/commit/483c9388119f06bac420d92053cff9ef94e83bea · [email protected]https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r7jx-j9h7-j4xj · [email protected]https://www.vulncheck.com/advisories/freerdp-before-3.31.0-information-disclosure-via-rdpgfx-resetgraphics · [email protected]https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r7jx-j9h7-j4xj · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 15 SEP 15:18Z
    FreeRDP before 3.31.0 Information Disclosure via RDPGFX ResetGraphics
    cvelistv5