CVE-2026-110836 FreeRDP 3.0.0 before 3.32.0 Infinite Loop DoS via Gateway Content-Type
A malicious gateway can cause a FreeRDP client to enter an infinite loop and exhaust CPU resources by sending crafted HTTP response headers.
- 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-2026-110836?
CVE-2026-110836 is a high-severity denial of service vulnerability in Freerdp Freerdp, published on 14 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 3.0.0 before 3.32.0 contains an infinite loop vulnerability in http_response_recv() that allows malicious gateways to exhaust client CPU via crafted Content-Type headers. Attackers controlling a gateway can return a nonzero Content-Length with a semicolon-containing unrecognized Content-Type, pinning a client thread at full CPU indefinitely.
Weakness: CWE-835
Which versions are affected by CVE-2026-110836?
It affects 1 product.
Products include Freerdp Freerdp.
How do I fix CVE-2026-110836?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-110836 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-110836 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-2026-110836, GHSA-2h9m-vq46-2fq9, GHSA-h7fx-22wv-4cg8, UBUNTU-CVE-2026-110836.