CVE-2014-4859

Name: CVE-2014-4859
Creator: NVD / NIST
Published: 2020-01-31T16:15:10.3+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 0.59%

Last modified Jun 17, 2026

CVE-2014-4859 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. 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.. EPSS estimates a 0.59% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.8/10

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.59%

43.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Tianocore	Edk2	All versions

References

http://www.kb.cert.org/vuls/id/552286Third Party Advisory, US Government Resource
http://www.kb.cert.org/vuls/id/552286Third Party Advisory, US Government Resource

Timeline

Published: Jan 31, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2014-4859?

How severe is CVE-2014-4859?

CVE-2014-4859 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.

How do I fix CVE-2014-4859?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2014-4859?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST