Is there a public exploit for CVE-2026-121392?

No public exploit for CVE-2026-121392 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-2026-121392?

CVE-2026-121392 scores CVSS 9.1 (v4.0), rated critical.

What does CVE-2026-121392 affect?

CVE-2026-121392 affects FreeRDP FreeRDP.

9.1 Critical

FreeRDP before 3.32.2 contains an improper certificate validation vulnerability in tlsverifycertificate() that accepts Common Name fallback…

CVE-2026-121392

FreeRDP before 3.32.2 contains an improper certificate validation vulnerability in tlsverifycertificate() that accepts Common Name fallback despite non-matching SAN entries and matches IP literals against DNS strings. Man-in-the-middle attackers holding a certificate from a client-trusted CA can bypass server identity checks to intercept RDP sessions, including keystrokes, clipboard, and screen content.

Assessment

CVSS: 9.1 (v4.0)
Severity: Critical
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:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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