Is there a public exploit for CVE-2026-121390?

No public exploit for CVE-2026-121390 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-121390?

CVE-2026-121390 scores CVSS 5.3 (v4.0), rated medium.

What does CVE-2026-121390 affect?

CVE-2026-121390 affects FreeRDP FreeRDP.

5.3 Medium

FreeRDP 3.0.0 before 3.32.2 built with WITHAAD=ON contains a reachable assertion because its ARM gateway response parser accepts a missing…

CVE-2026-121390

FreeRDP 3.0.0 before 3.32.2 built with WITHAAD=ON contains a reachable assertion because its ARM gateway response parser accepts a missing or non-string redirectedServerCert field and passes a null buffer to the certificate parser. A malicious or malformed user-selected gateway can return such a response to abort the client process.

Assessment

CVSS: 5.3 (v4.0)
Severity: Medium
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 3 November 2026
Last updated: 3 November 2026
Affected: FreeRDP · FreeRDP
Assigner: VulnCheck

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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