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CVE-2021-28210

An unlimited recursion in DxeCore in EDK II.

7.8 HighFix available

An unlimited recursion in DxeCore in EDK II.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.40%Unchanged since Jun 12, 2021
90%50%10%1%

What each source reports

NVD Score used 7.8

An unlimited recursion in DxeCore in EDK II.

Record
CVE-2021-28210
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
4.6 MediumAV:L/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-674
Updated
2026-11-02
CVE List No score

An unlimited recursion in DxeCore in EDK II.

Record
CVE-2021-28210
Weakness
CWE-674
Updated
2026-11-02
EUVDEUVD-2021-14900 No score

An unlimited recursion in DxeCore in EDK II.

Record
EUVD-2021-14900
Updated
2026-11-03
GitHub AdvisoriesGHSA-3q28-wqh2-j2f3 No score

An unlimited recursion in DxeCore in EDK II.

An unlimited recursion in DxeCore in EDK II.

Record
GHSA-3q28-wqh2-j2f3
Weakness
CWE-674
Updated
2026-11-02
OSV 7.8

An unlimited recursion in DxeCore in EDK II.

Record
CVE-2021-28210
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2021-28210 7.8

An unlimited recursion in DxeCore in EDK II.

Record
DEBIAN-CVE-2021-28210
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 11 moreShow less
OSVOESA-2021-1251 7.8

edk2 security update

EDK II is a modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications.

Security Fix(es):

An unlimited recursion in DxeCore in EDK II.(CVE-2021-28210)

Record
OESA-2021-1251
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2021:4198 7.8

Red Hat Security Advisory: edk2 security, bug fix, and enhancement update

Record
RHSA-2021:4198
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2021-28210 7.8

An unlimited recursion in DxeCore in EDK II.

Record
UBUNTU-CVE-2021-28210
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2021:0495-1 No score

Security update for ovmf

This update for ovmf fixes the following issues:

  • CVE-2021-28211: ovmf: edk2: possible heap corruption with LzmaUefiDecompressGetInfo (bsc#1183578)
  • CVE-2021-28210: ovmf: unlimited FV recursion, round 2 (bsc#1183579)

This update was imported from the SUSE:SLE-15-SP2:Update update project.

Record
openSUSE-SU-2021:0495-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:11134-1 No score

ovmf-202105-3.4 on GA media

These are all security issues fixed in the ovmf-202105-3.4 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11134-1
Updated
2026-11-02
OSVSUSE-SU-2021:0972-1 No score

Security update for ovmf

This update for ovmf fixes the following issues:

  • CVE-2021-28211: ovmf: edk2: possible heap corruption with LzmaUefiDecompressGetInfo (bsc#1183578)
  • CVE-2021-28210: ovmf: unlimited FV recursion, round 2 (bsc#1183579)
Record
SUSE-SU-2021:0972-1
Updated
2026-11-02
OSVSUSE-SU-2021:0987-1 No score

Security update for ovmf

This update for ovmf fixes the following issues:

  • CVE-2021-28211: ovmf: edk2: possible heap corruption with LzmaUefiDecompressGetInfo (bsc#1183578)
  • CVE-2021-28210: ovmf: unlimited FV recursion, round 2 (bsc#1183579)
Record
SUSE-SU-2021:0987-1
Updated
2026-11-02
OSVSUSE-SU-2021:2117-1 No score

Security update for ovmf

This update for ovmf fixes the following issues:

  • Fixed a possible buffer overflow in IScsiDxe (bsc#1186151)
  • CVE-2021-28211: ovmf: edk2: possible heap corruption with LzmaUefiDecompressGetInfo (bsc#1183578)
  • CVE-2021-28210: ovmf: unlimited FV recursion, round 2 (bsc#1183579)
  • CVE-2019-14584: ovmf,shim: NULL pointer dereference in AuthenticodeVerify() (bsc#1177789)
Record
SUSE-SU-2021:2117-1
Updated
2026-11-02
OSVSUSE-SU-2021:2161-1 No score

Security update for ovmf

This update for ovmf fixes the following issues:

  • Fixed a possible buffer overflow in IScsiDxe (bsc#1186151)
  • CVE-2021-28211: ovmf: edk2: possible heap corruption with LzmaUefiDecompressGetInfo (bsc#1183578)
  • CVE-2021-28210: ovmf: unlimited FV recursion, round 2 (bsc#1183579)
Record
SUSE-SU-2021:2161-1
Updated
2026-11-02
OSVUSN-4923-1 No score

edk2 vulnerabilities

Laszlo Ersek discovered that EDK II incorrectly handled recursion. A remote attacker could possibly use this issue to cause EDK II to consume resources, leading to a denial of service. (CVE-2021-28210)

Satoshi Tanda discovered that EDK II incorrectly handled decompressing certain images. A remote attacker could use this issue to cause EDK II to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-28211)

Record
USN-4923-1
Updated
2026-11-02
OSVUSN-7060-1 No score

edk2 vulnerabilities

It was discovered that EDK II did not check the buffer length in XHCI, which could lead to a stack overflow. A local attacker could potentially use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2019-0161)

Laszlo Ersek discovered that EDK II incorrectly handled recursion. A remote attacker could possibly use this issue to cause EDK II to consume resources, leading to a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2021-28210)

Satoshi Tanda discovered that EDK II incorrectly handled decompressing certain images. A remote attacker could use this issue to cause EDK II to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2021-28211)

It was discovered that EDK II incorrectly decoded certain strings. A remote attacker could use this issue to cause EDK II to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2021-38575)

It was discovered that EDK II had integer underflow vulnerability in SmmEntryPoint, which could result in a buffer overflow. An attacker could potentially use this issue to cause a denial of service. (CVE-2021-38578)

Elison Niven discovered that OpenSSL, vendored in EDK II, incorrectly handled the c_rehash script. A local attacker could possibly use this issue to execute arbitrary commands when c_rehash is run. This issue only affected Ubuntu 16.04 LTS. (CVE-2022-1292)

Record
USN-7060-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
edk2
Debian:12
before 2020.11-1
2020.11-1
edk2
Debian:13
before 2020.11-1
2020.11-1
edk2
Debian:14
before 2020.11-1
2020.11-1
edk2
Debian:9
From an advisory covering 11 CVEs
before 0~20161202.7bbe0b3e-1+deb9u2, plus listed versions
0~20161202.7bbe0b3e-10~20161202.7bbe0b3e-1+deb9u1
0~20161202.7bbe0b3e-1+deb9u2
edk2
openEuler:20.03-LTS-SP1
before 202002-4.oe1
202002-4.oe1
edk2
Red Hat:enterprise_linux:8::appstream
From an advisory covering 4 CVEs
before 0:20210527gite1999b264f1f-3.el8
0:20210527gite1999b264f1f-3.el8
edk2-aarch64
Red Hat:enterprise_linux:8::appstream
From an advisory covering 4 CVEs
before 0:20210527gite1999b264f1f-3.el8
0:20210527gite1999b264f1f-3.el8
edk2-ovmf
Red Hat:enterprise_linux:8::appstream
From an advisory covering 4 CVEs
before 0:20210527gite1999b264f1f-3.el8
0:20210527gite1999b264f1f-3.el8
ovmf
SUSE:Linux Enterprise Module for Server Applications 15 SP2
From an advisory covering 2 CVEs
before 201911-7.11.1
201911-7.11.1
ovmf
SUSE:Linux Enterprise Server 12 SP5
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-3.35.1
2017+git1510945757.b2662641d5-3.35.1
Show 25 moreShow less
Affected packages
PackageAffectedFixed
ovmf
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-3.35.1
2017+git1510945757.b2662641d5-3.35.1
ovmf
SUSE:Linux Enterprise Server 12 SP2-BCL
From an advisory covering 3 CVEs
before 2015+git1462940744.321151f-19.23.1
2015+git1462940744.321151f-19.23.1
ovmf
SUSE:Linux Enterprise High Performance Computing 15-ESPOS
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-5.43.1
2017+git1510945757.b2662641d5-5.43.1
ovmf
SUSE:Linux Enterprise High Performance Computing 15-LTSS
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-5.43.1
2017+git1510945757.b2662641d5-5.43.1
ovmf
SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-5.43.1
2017+git1510945757.b2662641d5-5.43.1
ovmf
SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-5.43.1
2017+git1510945757.b2662641d5-5.43.1
ovmf
SUSE:Linux Enterprise Server 15-LTSS
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-5.43.1
2017+git1510945757.b2662641d5-5.43.1
ovmf
SUSE:Linux Enterprise Server 15 SP1-BCL
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-5.43.1
2017+git1510945757.b2662641d5-5.43.1
ovmf
SUSE:Linux Enterprise Server 15 SP1-LTSS
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-5.43.1
2017+git1510945757.b2662641d5-5.43.1
ovmf
SUSE:Linux Enterprise Server for SAP Applications 15
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-5.43.1
2017+git1510945757.b2662641d5-5.43.1
ovmf
SUSE:Linux Enterprise Server for SAP Applications 15 SP1
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-5.43.1
2017+git1510945757.b2662641d5-5.43.1
ovmf
SUSE:Manager Proxy 4.0
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-5.43.1
2017+git1510945757.b2662641d5-5.43.1
ovmf
SUSE:Manager Retail Branch Server 4.0
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-5.43.1
2017+git1510945757.b2662641d5-5.43.1
ovmf
SUSE:Manager Server 4.0
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-5.43.1
2017+git1510945757.b2662641d5-5.43.1
ovmf
SUSE:Enterprise Storage 6
From an advisory covering 2 CVEs
before 2017+git1510945757.b2662641d5-5.43.1
2017+git1510945757.b2662641d5-5.43.1
edk2
Ubuntu:Pro:16.04:LTS
before 0~20160408.ffea0a2c-2ubuntu0.2+esm3, plus listed versions
0~20150106.5c2d456b-20~20160104.c2a892d7-10~20160408.ffea0a2c-20~20160408.ffea0a2c-2ubuntu0.10~20160408.ffea0a2c-2ubuntu0.20~20160408.ffea0a2c-2ubuntu0.2+esm1
0~20160408.ffea0a2c-2ubuntu0.2+esm3
edk2
Ubuntu:Pro:18.04:LTS
before 0~20180205.c0d9813c-2ubuntu0.3+esm2, plus listed versions
0~20170911.5dfba97c-10~20171010.234dbcef-10~20171027.76fd5a66-10~20171205.a9212288-10~20180105.0bc94c74-1
Show 6 moreShow less
0~20180205.c0d9813c-10~20180205.c0d9813c-20~20180205.c0d9813c-2ubuntu0.10~20180205.c0d9813c-2ubuntu0.20~20180205.c0d9813c-2ubuntu0.30~20180205.c0d9813c-2ubuntu0.3+esm1
0~20180205.c0d9813c-2ubuntu0.3+esm2
edk2
Ubuntu:20.04:LTS
before 0~20191122.bd85bf54-2ubuntu3.2, plus listed versions
0~20190606.20d2e5a1-2ubuntu10~20190828.37eef910-30~20190828.37eef910-40~20191122.bd85bf54-10~20191122.bd85bf54-1ubuntu1
Show 5 moreShow less
0~20191122.bd85bf54-20~20191122.bd85bf54-2ubuntu10~20191122.bd85bf54-2ubuntu20~20191122.bd85bf54-2ubuntu30~20191122.bd85bf54-2ubuntu3.1
0~20191122.bd85bf54-2ubuntu3.2
edk2
Ubuntu:20.04:LTS
From an advisory covering 2 CVEs
before 0~20191122.bd85bf54-2ubuntu3.2, plus listed versions
0~20190606.20d2e5a1-2ubuntu10~20190828.37eef910-30~20190828.37eef910-40~20191122.bd85bf54-10~20191122.bd85bf54-1ubuntu1
Show 5 moreShow less
0~20191122.bd85bf54-20~20191122.bd85bf54-2ubuntu10~20191122.bd85bf54-2ubuntu20~20191122.bd85bf54-2ubuntu30~20191122.bd85bf54-2ubuntu3.1
0~20191122.bd85bf54-2ubuntu3.2
edk2
Ubuntu:Pro:16.04:LTS
From an advisory covering 6 CVEs
before 0~20160408.ffea0a2c-2ubuntu0.2+esm3, plus listed versions
0~20150106.5c2d456b-20~20160104.c2a892d7-10~20160408.ffea0a2c-20~20160408.ffea0a2c-2ubuntu0.10~20160408.ffea0a2c-2ubuntu0.20~20160408.ffea0a2c-2ubuntu0.2+esm1
0~20160408.ffea0a2c-2ubuntu0.2+esm3
edk2
Ubuntu:Pro:18.04:LTS
From an advisory covering 6 CVEs
before 0~20180205.c0d9813c-2ubuntu0.3+esm2, plus listed versions
0~20170911.5dfba97c-10~20171010.234dbcef-10~20171027.76fd5a66-10~20171205.a9212288-10~20180105.0bc94c74-1
Show 6 moreShow less
0~20180205.c0d9813c-10~20180205.c0d9813c-20~20180205.c0d9813c-2ubuntu0.10~20180205.c0d9813c-2ubuntu0.20~20180205.c0d9813c-2ubuntu0.30~20180205.c0d9813c-2ubuntu0.3+esm1
0~20180205.c0d9813c-2ubuntu0.3+esm2
edk2
Ubuntu:20.04:LTS
From an advisory covering 6 CVEs
before 0~20191122.bd85bf54-2ubuntu3.6, plus listed versions
0~20190606.20d2e5a1-2ubuntu10~20190828.37eef910-30~20190828.37eef910-40~20191122.bd85bf54-10~20191122.bd85bf54-1ubuntu1
Show 9 moreShow less
0~20191122.bd85bf54-20~20191122.bd85bf54-2ubuntu10~20191122.bd85bf54-2ubuntu20~20191122.bd85bf54-2ubuntu30~20191122.bd85bf54-2ubuntu3.10~20191122.bd85bf54-2ubuntu3.20~20191122.bd85bf54-2ubuntu3.30~20191122.bd85bf54-2ubuntu3.40~20191122.bd85bf54-2ubuntu3.5
0~20191122.bd85bf54-2ubuntu3.6
edk2
Ubuntu:22.04:LTS
From an advisory covering 6 CVEs
before 2022.02-3ubuntu0.22.04.3, plus listed versions
2021.08~rc0-22021.08-32021.11~rc1-12021.11-12021.11-2
Show 7 moreShow less
2022.02~rc1-12022.02~rc1-1ubuntu12022.02-12022.02-22022.02-32022.02-3ubuntu0.22.04.12022.02-3ubuntu0.22.04.2
2022.02-3ubuntu0.22.04.3
ovmf
openSUSE:Leap 15.2
From an advisory covering 2 CVEs
before 201911-lp152.6.11.1
201911-lp152.6.11.1
ovmf
openSUSE:Tumbleweed
From an advisory covering 21 CVEs
before 202105-3.4
202105-3.4

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-28210 is a high vulnerability (CVSS 7.8) in Tianocore Edk Ii, published March 16, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 34th percentile. Fixed in edk2 2020.11-1.

References

Show 63 moreShow less
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