CVE-2026-111377 FreeRDP 2.0.0 before 3.32.0 Memory Exhaustion via Static Channel Reassembly
Authenticated clients can exhaust server memory by sending endless static channel fragments, causing denial of service in FreeRDP.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-111377?
CVE-2026-111377 is a high-severity denial of service vulnerability in Freerdp Freerdp, published on 16 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
FreeRDP from 2.0.0 before 3.32.0 contains an unbounded reassembly vulnerability in WTSProcessChannelData that fails to enforce cumulative fragment limits. Authenticated clients can start a static virtual channel message, withhold the LAST flag, and send endless fragments to exhaust server memory.
Weakness: CWE-400
Which versions are affected by CVE-2026-111377?
It affects 1 product.
Products include Freerdp Freerdp.
How do I fix CVE-2026-111377?
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-2026-111377 being exploited?
There is no known exploitation of CVE-2026-111377 in the wild and no public exploit code.
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-2026-111377, GHSA-5qxm-7xrj-fjrf, GHSA-xm53-352c-57jw, UBUNTU-CVE-2026-111377.