CVE-2026-109249

5.5Medium

Published 12 Oct 2026 · NVD status: Undergoing Analysis · AI triage by gemini-3.8-flash

5.5Medium

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required
Impact: High impact on availability
Weakness: CWE-125

Impact

Attackers can crash xfreerdp via a denial of service before an RDP connection even starts. To trigger it, they must trick a local user into opening a malicious .msrcIncident invitation file and entering a password.

Root cause

The parser advances its cursor without decrementing the remaining length counter, causing a heap out-of-bounds read past the decrypted buffer.

Affected systems

FreeRDP 3.0.0 before 3.32.0

CVSS v3.1 · CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Fix & remediation

Upgrade FreeRDP to version 3.32.0 or later. As an interim workaround, do not open untrusted .msrcIncident files.

shell

$ sudo apt-get update && sudo apt-get install --only-upgrade freerdp3-x11

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD description

FreeRDP 3.0.0 before 3.32.0 contains a heap out-of-bounds read in freerdp_assistance_parse_all_elements_of() because it advances its parsing cursor without reducing the remaining length, letting the scan window exceed the decrypted ConnectionString2 buffer. Attackers can supply a crafted .msrcIncident invitation file and password that crash xfreerdp when opened, before any RDP connection.

References

Source: nvd.nist.gov/vuln/detail/CVE-2026-109249