Is there a public exploit for CVE-2026-121952?

No public exploit for CVE-2026-121952 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-2026-121952?

CVE-2026-121952 scores CVSS 9.3 (v4.0), rated critical.

What does CVE-2026-121952 affect?

CVE-2026-121952 affects FreeRDP FreeRDP.

9.3 Critical

FreeRDP before 3.32.2 has an out-of-bounds write in the proxy because rdpreadbitmapcachev2capabilityset rejects only numCellCaches values…

CVE-2026-121952

FreeRDP before 3.32.2 has an out-of-bounds write in the proxy because rdpreadbitmapcachev2capabilityset rejects only numCellCaches values above 5, yet the bitmap cache v2 cell array is later accessed at fixed indices 0 through 4. A client connecting to the proxy can declare fewer than five cell caches in its Confirm Active, causing heap corruption, heap data leakage to the backend, or a crash.

Assessment

CVSS: 9.3 (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: 4 November 2026
Last updated: 4 November 2026
Affected: FreeRDP · FreeRDP
Assigner: VulnCheck

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

At the source

EUVD (ENISA)

References

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