Is there a public exploit for CVE-2026-66334?

No public exploit for CVE-2026-66334 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-2026-66334?

CVE-2026-66334 scores CVSS 6.8 (v4.0), rated medium.

What does CVE-2026-66334 affect?

CVE-2026-66334 affects AMI AptioV.

6.8 Medium

AMI APTIOV contains vulnerabilities in BIOS where privileged users may cause the “Out-of-Bounds Write” by local access.

CVE-2026-66334

AMI APTIOV contains vulnerabilities in BIOS where privileged users may cause the “Out-of-Bounds Write” by local access. Successful exploitation of this vulnerability may lead to a denial of service during firmware update processing, such as a crash or failed update if the out-of-bounds write hits unmapped memory. It could also impact Integrity, and Availability.

Assessment

CVSS: 6.8 (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: 10 November 2026
Last updated: 10 November 2026
Affected: AMI · AptioV
Assigner: AMI

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

At the source

EUVD (ENISA)

References

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