CVE-2026-109951CWE-125

CVE-2026-109951

Medium · published October 13, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
23.1
In the wild
Unconfirmed
What it is

FreeRDP 3.17.1 before 3.32.0 contains a heap buffer over-read vulnerability in DynvcTrackerHandleCreateBack of the freerdp-proxy DRDYNVC channel handler that allows malicious backend RDP servers to read heap memory out of bounds. Attackers can send a CREATE_REQUEST_PDU whose channel name lacks a NUL byte, causing an unbounded snprintf read that leaks memory into proxy logs or crashes the process.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
EPSS
0.00314 · 23.1th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-10-13T18:17Z
Affected products (1)
ProductVersionsFixed in
freerdp/freerdp≥ 3.17.1, < 3.32.03.32.0
References (3)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-g4wg-67xq-8q53 · [email protected]https://www.vulncheck.com/advisories/freerdp-3.17.1-before-3.32.0-heap-buffer-over-read-via-proxy-drdynvc-channel-name · [email protected]https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-g4wg-67xq-8q53 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 15 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 13 OCT 13:27Z
    FreeRDP 3.17.1 before 3.32.0 Heap Buffer Over-Read via Proxy DRDYNVC Channel Name
    cvelistv5
  • 13 OCT 13:27Z
    FreeRDP 3.17.1 before 3.32.0 Heap Buffer Over-Read via Proxy DRDYNVC Channel Name
    cvelistv5