CVE-2026-111378 FreeRDP 3.0.0 before 3.32.0 Unauthenticated Memory Exhaustion via NLA Frame Parser
Unauthenticated attackers can exhaust server memory in FreeRDP by sending malformed NLA frames, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-111378?
CVE-2026-111378 is a high-severity denial of service vulnerability in Freerdp Freerdp, published on 16 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 before 3.32.0 contains an uncontrolled resource consumption vulnerability in parse_nla_mode_pdu that allows unauthenticated attackers to exhaust server memory. Attackers can complete TLS and stream bytes not beginning with the DER SEQUENCE tag 0x30, causing unbounded receive buffer growth before NLA authentication.
Weakness: CWE-400
Which versions are affected by CVE-2026-111378?
It affects 1 product.
Products include Freerdp Freerdp.
How do I fix CVE-2026-111378?
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-2026-111378 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111378 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-2026-111378, GHSA-h25h-m6m4-j5vc, GHSA-qpfh-m9w6-xf2x, UBUNTU-CVE-2026-111378.