Is there a public exploit for CVE-2026-121964?

No public exploit for CVE-2026-121964 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-2026-121964?

CVE-2026-121964 scores CVSS 8.7 (v4.0), rated high.

What does CVE-2026-121964 affect?

CVE-2026-121964 affects FreeRDP FreeRDP.

8.7 High

FreeRDP before 3.32.2 contains a heap-based buffer overflow in the RD Gateway RPC client, where rpcclientrecvfragment writes BINDACK and…

CVE-2026-121964

FreeRDP before 3.32.2 contains a heap-based buffer overflow in the RD Gateway RPC client, where rpcclientrecvfragment writes BINDACK and ALTERCONTEXTRESP fragments into a persistent PDU stream after checking only total capacity rather than remaining capacity from the current stream position. A malicious or compromised RD Gateway can send crafted RPC fragments with manipulated allochint and fraglength values to overwrite client heap memory with attacker-controlled data, causing a crash or potentially arbitrary code execution.

Assessment

CVSS: 8.7 (v4.0)
Severity: High
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:N/VI:N/VA:H/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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