CVE-2021-26391

highpriority · track · 31EPSS 0.002 · 8 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.18% (8th) EPSS

CVSS 7.8 · high

Is it mine?

37 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

Insufficient verification of multiple header signatures while loading a Trusted Application (TA) may allow an attacker with privileges to gain code execution in that TA or the OS/kernel.

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

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

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 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)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-347US

affected products (37)

Products and version ranges known to be affected.

AMD Prozessorall versionscert_bundDEcpe:/h:amd:amd_processor:-
Dell PowerEdgeall versionscert_bundDEcpe:/h:dell:poweredge:-
HP Computerall versionscert_bundDEcpe:/h:hp:computer:-
HPE ProLiantall versionscert_bundDEcpe:/h:hp:proliant:-
Lenovo BIOSall versionscert_bundDEcpe:/h:lenovo:bios:-
AMD AMD Radeon RX 5000 Series & PRO W5000 SeriesAMD Radeon Pro Software Enterprise → 22.Q2enisa_euvdEU
AMD AMD Radeon RX 5000 Series & PRO W5000 SeriesAMD Radeon Software → 22.5.2enisa_euvdEU
AMD AMD Radeon RX 5000 Series & PRO W5000 SeriesEnterprise Driver → 22.10.20enisa_euvdEU
AMD AMD Radeon RX 6000 Series & PRO W6000 SeriesAMD Radeon Pro Software Enterprise → 22.Q2enisa_euvdEU
AMD AMD Radeon RX 6000 Series & PRO W6000 SeriesAMD Radeon Software → 22.5.2enisa_euvdEU
AMD AMD Radeon RX 6000 Series & PRO W6000 SeriesEnterprise Driver → 22.10.20enisa_euvdEU
amd enterprise driver< 22.10.20nvdUScpe:2.3:a:amd:enterprise_driver:*:*:*:*:*:*:*:*
amd radeon pro software< 22.q2nvdUScpe:2.3:a:amd:radeon_pro_software:*:*:*:*:*:*:*:*
amd radeon rx vega 56 firmwareall versionsnvdUScpe:2.3:o:amd:radeon_rx_vega_56_firmware:*:*:*:*:*:*:*:*
amd radeon rx vega 64 firmwareall versionsnvdUScpe:2.3:o:amd:radeon_rx_vega_64_firmware:*:*:*:*:*:*:*:*
amd radeon software< 22.5.2nvdUScpe:2.3:a:amd:radeon_software:*:*:*:*:*:*:*:*
amd ryzen 3 5300g firmwareall versionsnvdUScpe:2.3:o:amd:ryzen_3_5300g_firmware:*:*:*:*:*:*:*:*
amd ryzen 3 5300ge firmwareall versionsnvdUScpe:2.3:o:amd:ryzen_3_5300ge_firmware:*:*:*:*:*:*:*:*
amd ryzen 3 5300u firmwareall versionsnvdUScpe:2.3:o:amd:ryzen_3_5300u_firmware:*:*:*:*:*:*:*:*
amd ryzen 3 5400u firmwareall versionsnvdUScpe:2.3:o:amd:ryzen_3_5400u_firmware:*:*:*:*:*:*:*:*

showing 20 of 37

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-2349HP Computer AMD Client UEFI Firmware: Mehrere SchwachstellenDeutsch2022-12-15csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in HP Computern in der AMD Client UEFI Firmware ausnutzen, um seine Privilegien zu erhöhen und beliebigen Code auszuführen.
WID-SEC-W-2023-0061AMD Prozessoren: Mehrere SchwachstellenDeutsch2023-01-10csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in AMD Prozessoren ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen und Daten zu manipulieren.
WID-SEC-W-2023-1190AMD Prozessoren: Mehrere SchwachstellenDeutsch2023-05-09csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in AMD Prozessoren ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen, Informationen offenzulegen, Dateien zu manipulieren oder einen Denial of Service Zustand herbeizuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2022-11-09modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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