What is CVE-2021-28210?

CVE-2021-28210 is a high-severity vulnerability in Tianocore Edk2, classified under Uncontrolled Recursion. CVSS score: 7.8/10. Published 2021-06-11.

How severe is CVE-2021-28210?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Tianocore Edk2

CVE-2021-28210

An unlimited recursion in DxeCore in EDK II.

Published 2021-06-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (31.6th percentile), scored 2026-09-28.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.6% 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
Tianocore Edk Ii — versions unspecified

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

References

bugzilla.tianocore.org/show_bug.cgi (Exploit, Patch, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2021-28210?: CVE-2021-28210 is a high-severity vulnerability in Tianocore Edk2, classified under Uncontrolled Recursion. CVSS score: 7.8/10. Published 2021-06-11.
How severe is CVE-2021-28210?: High severity. CVSS v3 base score is 7.8 out of 10.