CVE-2026-0438

CVE-2026-0438 is a medium-severity vulnerability with a CVSS 4.0 base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1072.

Key facts

Description

A System Management Mode (SMM) handler could perform a callout to code located in non-SMM/untrusted memory. A highly privileged attacker could, with active user interaction and under high complexity and present preconditions, trigger execution of attacker-controlled code in SMM, potentially compromising the system’s confidentiality, integrity, and availability.

Frequently asked questions

What is CVE-2026-0438?
A System Management Mode (SMM) handler could perform a callout to code located in non-SMM/untrusted memory. A highly privileged attacker could, with active user interaction and under high complexity and present preconditions, trigger execution of attacker-controlled code in SMM, potentially compromising the system’s confidentiality, integrity, and availability.
How severe is CVE-2026-0438?
CVE-2026-0438 has a CVSS 4.0 base score of 5.4, rated medium severity.
Is CVE-2026-0438 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-0438?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-0438 have an EU (EUVD) identifier?
Yes. CVE-2026-0438 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30496.
When was CVE-2026-0438 published?
CVE-2026-0438 was published on 2026-05-15 and last updated on 2026-06-17.

References