CVE-2026-6484
CVE-2026-6484 is a high-severity vulnerability with a CVSS 3.x base score of 8.2. 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-1277.
Key facts
- Severity: High (CVSS 3.x base score 8.2)
- EPSS exploit prediction: 0% (4th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-1277
- Published:
- Last modified:
Description
In an UEFI, Lack of verified boot to certain FV may cause arbitrary code execution.
Frequently asked questions
- What is CVE-2026-6484?
- In an UEFI, Lack of verified boot to certain FV may cause arbitrary code execution.
- How severe is CVE-2026-6484?
- CVE-2026-6484 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-6484 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-2026-6484?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-6484 published?
- CVE-2026-6484 was published on 2026-08-12 and last updated on 2026-08-31.