CVE-2026-109679 FreeRDP 3.0.0-beta4 before 3.32.0 NULL Pointer Crash via ARM Response
A malicious ARM gateway can crash the FreeRDP client by returning an empty HTTP 200 response, causing a null pointer dereference.
- 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-2026-109679?
CVE-2026-109679 is a medium-severity vulnerability in Freerdp Freerdp, published on 13 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 3.0.0-beta4 before 3.32.0 contains a NULL pointer dereference in arm_handle_request_ok when an ARM endpoint returns an empty HTTP 200 body. Attackers controlling the configured ARM gateway can return a zero-length body to pass NULL to strnlen and crash the connecting client.
Weakness: CWE-476
Which versions are affected by CVE-2026-109679?
It affects 1 product.
Products include Freerdp Freerdp.
How do I fix CVE-2026-109679?
Upgrade to a fixed version.
Is CVE-2026-109679 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109679 exists.
Other vulnerabilities in Freerdp Freerdp
- CVE-2021-37594 Other in n/a
- CVE-2021-37595 Other in n/a
- CVE-2026-67305 FreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via Cliprdr
- CVE-2026-66402 FreeRDP before 3.29.0 TLS Certificate Identity Validation Bypass
- CVE-2026-67289 FreeRDP before 3.29.0 HTTP Proxy Request Injection via Redirection
Sources
Also known as DEBIAN-CVE-2026-109679, GHSA-qjwp-c855-hc69, GHSA-w7w2-8hr6-7gcf, UBUNTU-CVE-2026-109679.