CVE-2026-110833 FreeRDP before 3.32.0 Unbounded Memory Retention via RDPDR Proxy
Attackers can exhaust proxy memory by sending unbounded RDPDR channel fragments, causing a denial of service in FreeRDP.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-110833?
CVE-2026-110833 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, with no action from the victim.
Official description
FreeRDP from 3.0.0-beta1 before 3.32.0 fails to enforce cumulative or absolute size limits when reassembling RDPDR channel fragments in the proxy. Attackers can send a FIRST fragment followed by continuation fragments without LAST, growing per-session heap streams proportional to traffic and exhausting proxy memory.
Weakness: CWE-400
Which versions are affected by CVE-2026-110833?
It affects 1 product.
Products include Freerdp Freerdp.
How do I fix CVE-2026-110833?
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-2026-110833 being exploited?
There is no known exploitation of CVE-2026-110833 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-2026-110833, GHSA-m7g5-gw57-cwcr, GHSA-qh7g-q627-6q97, UBUNTU-CVE-2026-110833.