CVE-2026-111378: FreeRDP 3.0.0 before 3.32.0 Unauthenticated Memory Exhaustion via NLA Frame Parser

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-10-16 · updated 2026-10-20
Weakness: CWE-400

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.

Affected products

FreeRDP: from 3.0.0 before 3.32.0 — fixed in 3.32.0

How to fix

Upgrade to a fixed version: FreeRDP 3.32.0. Check the vendor advisory for mitigations.

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qpfh-m9w6-xf2x
https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-unauthenticated-memory-exhaustion-via-nla-frame-parser
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qpfh-m9w6-xf2x

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