CVE-2021-26315

mediumpriority · track · 31OT risk · elevatedEPSS 0.002 · 6 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.17% (6th) EPSS

CVSS 4.6 · medium

Is it mine?

21 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

When the AMD Platform Security Processor (PSP) boot rom loads, authenticates, and subsequently decrypts an encrypted FW, due to insufficient verification of the integrity of decrypted image, arbitrary code may be executed in the PSP when encrypted firmware images are used.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–7.8

v2.04.6mediumAV:L/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 6.4

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-345USprimary

affected products (21)

Products and version ranges known to be affected.

AMD 3rd Gen AMD EPYC™unspecified → MilanPI-SP3_1.0.0.4enisa_euvdEU
amd epyc 7003 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7003_firmware:*:*:*:*:*:*:*:*
amd epyc 72f3 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_72f3_firmware:*:*:*:*:*:*:*:*
amd epyc 7313 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7313_firmware:*:*:*:*:*:*:*:*
amd epyc 7313p firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7313p_firmware:*:*:*:*:*:*:*:*
amd epyc 7343 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7343_firmware:*:*:*:*:*:*:*:*
amd epyc 73f3 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_73f3_firmware:*:*:*:*:*:*:*:*
amd epyc 7413 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7413_firmware:*:*:*:*:*:*:*:*
amd epyc 7443 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7443_firmware:*:*:*:*:*:*:*:*
amd epyc 7443p firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7443p_firmware:*:*:*:*:*:*:*:*
amd epyc 7453 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7453_firmware:*:*:*:*:*:*:*:*
amd epyc 74f3 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_74f3_firmware:*:*:*:*:*:*:*:*
amd epyc 7513 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7513_firmware:*:*:*:*:*:*:*:*
amd epyc 7543 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7543_firmware:*:*:*:*:*:*:*:*
amd epyc 7543p firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7543p_firmware:*:*:*:*:*:*:*:*
amd epyc 75f3 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_75f3_firmware:*:*:*:*:*:*:*:*
amd epyc 7643 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7643_firmware:*:*:*:*:*:*:*:*
amd epyc 7663 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7663_firmware:*:*:*:*:*:*:*:*
amd epyc 7713 firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7713_firmware:*:*:*:*:*:*:*:*
amd epyc 7713p firmware< milanpi-sp3_1.0.0.4nvdUScpe:2.3:o:amd:epyc_7713p_firmware:*:*:*:*:*:*:*:*

showing 20 of 21

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-11-16modified 2026-06-17

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+1444 more

references (6)

External citations — patches, advisories, analysis.

scry

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