CVE-2026-109252 FreeRDP from 3.9.0 before 3.32.0 RDPEAR NULL Pointer Dereference via KERB_RPC_INTERNAL_NAME
A malicious server can crash FreeRDP clients by sending truncated KERB_RPC_INTERNAL_NAME data, causing a null pointer dereference during cleanup.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-109252?
CVE-2026-109252 is a medium-severity vulnerability in FreeRDP, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
FreeRDP from 3.9.0 before 3.32.0 contains a NULL pointer dereference vulnerability in the RDPEAR NDR reader that allows malicious servers to crash clients via truncated KERB_RPC_INTERNAL_NAME data. Attackers can send a CreateApReqAuthenticatorReq with NameCount of two or more ending before the Names pointer, causing cleanup to dereference a null base and terminate the client.
Weakness: CWE-476
Which versions are affected by CVE-2026-109252?
How do I fix CVE-2026-109252?
Upgrade to a fixed version.
Is CVE-2026-109252 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109252 exists.
Sources
Also known as DEBIAN-CVE-2026-109252, GHSA-8382-j7xc-2hfv, GHSA-93g7-296p-j77j, UBUNTU-CVE-2026-109252.