CVE-2014-4859
CVE-2014-4859 is a medium-severity vulnerability in Tianocore Edk2 with a CVSS 3.x base score of 6.8. 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-190.
Key facts
- Severity: Medium (CVSS 3.x base score 6.8)
- CVSS v2: 7.2
- EPSS exploit prediction: 1% (44th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-190
- Affected product: Tianocore Edk2
- Published:
- Last modified:
Description
Integer overflow in the Drive Execution Environment (DXE) phase in the Capsule Update feature in the UEFI implementation in EDK2 allows physically proximate attackers to bypass intended access restrictions via crafted data.
Frequently asked questions
- What is CVE-2014-4859?
- Integer overflow in the Drive Execution Environment (DXE) phase in the Capsule Update feature in the UEFI implementation in EDK2 allows physically proximate attackers to bypass intended access restrictions via crafted data.
- How severe is CVE-2014-4859?
- CVE-2014-4859 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2014-4859 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2014-4859?
- CVE-2014-4859 affects Tianocore Edk2. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2014-4859?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2014-4859 published?
- CVE-2014-4859 was published on 2020-01-31 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:tianocore:edk2:-:*:*:*:*:*:*:*
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