What is CVE-2014-8271?

CVE-2014-8271 is a medium-severity vulnerability in Tianocore Edk2, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.8/10. Published 2020-02-06.

How severe is CVE-2014-8271?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Buffer overflow in Tianocore Edk2

CVE-2014-8271

Buffer overflow in the Reclaim function in Tianocore EDK2 before SVN 16280 allows physically proximate attackers to gain privileges via a long variable name.

Vulnerability class: Buffer Overflow

Published 2020-02-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (32.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Tianocore Edk2 — versions before SVN 16280

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

sourceforge.net/p/edk2/code/16280/ (Patch)
www.kb.cert.org/vuls/id/533140 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2014-8271?: CVE-2014-8271 is a medium-severity vulnerability in Tianocore Edk2, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.8/10. Published 2020-02-06.
How severe is CVE-2014-8271?: Medium severity. CVSS v3 base score is 6.8 out of 10.