CVE-2026-110833: FreeRDP before 3.32.0 Unbounded Memory Retention via RDPDR Proxy

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-10-14 · updated 2026-10-23
Weakness: CWE-400

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.

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-m7g5-gw57-cwcr
https://www.vulncheck.com/advisories/freerdp-before-3.32.0-unbounded-memory-retention-via-rdpdr-proxy

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