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TI-2021-08180 Aliases CVE-2021-26353GHSA-3972-3jg9-99pp

Failure to validate inputs in SMM may allow an attacker to create a mishandled error…

Priority LOW 34CWE-665Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

Failure to validate inputs in SMM may allow an attacker to create a mishandled error leaving the DRTM UApp in a partially initialized state potentially resulting in loss of memory integrity.

Why it matters now

EPSS 0.00269 19th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
AMD3rd Gen EPYCvarious—No fix listedCNA
  • 3rd Gen EPYC VendorAMD Affected various Fixed in — No fix listed CNA

CPE configurations NVD · 46

CPEVersionsRoleVendor
cpe:2.3:o:amd:epyc_7763_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7763:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7713p_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7713p:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7713_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7713:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7663_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7663:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7643_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7643:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
  • cpe:2.3:o:amd:epyc_7763_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7763:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7713p_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7713p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7713_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7713:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7663_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7663:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7643_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7643:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
Show 36 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:amd:epyc_75f3_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_75f3:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7543p_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7543p:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7543_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7543:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7513_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7513:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7453_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7453:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_74f3_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_74f3:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7443p_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7443p:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7443_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7443:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7413_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7413:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_73f3_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_73f3:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7343_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7343:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7313p_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7313p:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7313_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7313:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_72f3_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_72f3:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7773x_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7773x:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7473x_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7473x:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7573x_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7573x:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
cpe:2.3:o:amd:epyc_7373x_firmware:*:*:*:*:*:*:*:*before milanpi-sp3_1.0.0.4VulnerableAMD
cpe:2.3:h:amd:epyc_7373x:-:*:*:*:*:*:*:*not specified by NVDRunning onAMD
  • cpe:2.3:o:amd:epyc_75f3_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_75f3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7543p_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7543p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7543_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7543:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7513_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7513:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7453_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7453:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_74f3_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_74f3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7443p_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7443p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7443_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7443:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7413_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7413:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_73f3_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_73f3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7343_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7343:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7313p_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7313p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7313_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7313:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_72f3_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_72f3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7773x_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7773x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7473x_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7473x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7573x_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7573x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD
  • cpe:2.3:o:amd:epyc_7373x_firmware:*:*:*:*:*:*:*:* Versions before milanpi-sp3_1.0.0.4 Vulnerable ·AMD
  • cpe:2.3:h:amd:epyc_7373x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·AMD

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-26353
  2. 2026-10-03 Alias added: GHSA-3972-3jg9-99pp

References

Advisory 1

  • TI-2023-06992 Out-of-bounds write in AMD 1st Gen AMD EPYC™ CVSS 3.1CRITICAL 9.8
  • TI-2021-08202 Insufficient input validation of mailbox data in the SMU may allow an attacker to coerce… CVSS 3.1CRITICAL 9.8
  • TI-2023-07040 Improper re-initialization of IOMMU during the DRTM event may permit an untrusted… CVSS 3.1CRITICAL 10.0
  • TI-2021-21473 Improper input validation in AMD Ryzen™ 2000 series Desktop Processors “Raven Ridge” AM4 CVSS 3.1CRITICAL 9.1
  • TI-2021-21485 Improper input validation in AMD 2nd Gen AMD EPYC™ CVSS 3.1HIGH 8.8
  • TI-2021-21480 Out-of-bounds write in AMD 2nd Gen AMD EPYC™ CVSS 3.1HIGH 7.5
See all 93 →

Sources

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