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TI-2021-09439 Aliases CVE-2021-28210GHSA-3q28-wqh2-j2f3

An unlimited recursion in DxeCore in EDK II.

Priority LOW 34CWE-674Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 1 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-674.

Summary

An unlimited recursion in DxeCore in EDK II.

Why it matters now

EPSS 0.00399 34th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
TianoCoreEDK IIup to edk2-stable202008—No fix listedCNA
  • EDK II VendorTianoCore Affected up to edk2-stable202008 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:tianocore:edk2:*:*:*:*:*:*:*:*before 202008VulnerableTianoCore
  • cpe:2.3:a:tianocore:edk2:*:*:*:*:*:*:*:* Versions before 202008 Vulnerable ·TianoCore

Remediation

Red Hat 1 advisory

  • RHSA-2021:4198 Released 2021-11-09 · Red Hat rating Moderate
    edk2 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) edk2-20210527gite1999b264f1f-3.el8, edk2-aarch64-20210527gite1999b264f1f-3.el8, edk2-ovmf-20210527gite1999b264f1f-3.el8

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:4198
Not affected: 1 product
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-28210
  2. 2026-10-03 Alias added: GHSA-3q28-wqh2-j2f3

References

Exploit 1

  • TI-2026-79288 Out-of-bounds write in Google Brotli decoder KEVCVSS 4.0CRITICAL 9.2
  • TI-2023-24240 Buffer Overflow in EDK II Network Package CVSS 3.1HIGH 8.8
  • TI-2023-24238 Infinite loop in EDK II Network Package CVSS 3.1HIGH 7.5
  • TI-2023-24235 Buffer Overflow in EDK II Network Package CVSS 3.1HIGH 8.8
  • TI-2023-26565 An insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu's EDK2. CVSS 3.1MEDIUM 6.7
  • TI-2023-24236 Out-of-Bounds Read in EDK II Network Package CVSS 3.1MEDIUM 6.5
See all 33 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences