CVE-2024-21977

lowpriority · track · 0EPSS 0.002 · 4 %ileDEEU

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.15% (4th) EPSS

CVSS 3.2 · low

Is it mine?

29 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cert_bund

EPSS · scored 2026-10-27

Incomplete cleanup after loading a CPU microcode patch may allow a privileged attacker to degrade the entropy of the RDRAND instruction, potentially resulting in loss of integrity for SEV-SNP guests.

cvss

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

3.2

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.13.2lowCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:Nsecondary · ENISA EU

v3.13.2lowCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:Nsecondary · psirt@amd.comexploitability 1.5 · impact 1.4

v3.13lowCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-459US

affected products (29)

Products and version ranges known to be affected.

AMD Prozessor EPYCall versionscert_bundDEcpe:/h:amd:amd_processor:epyc
AMD Prozessor EPYC 7272 CPU on SEVall versionscert_bundDEcpe:/h:amd:amd_processor:epyc_7272_cpu_on_sev
AMD Prozessor Ryzenall versionscert_bundDEcpe:/h:amd:amd_processor:ryzen
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Dell PowerEdgeall versionscert_bundDEcpe:/h:dell:poweredge:-
HP Computerall versionscert_bundDEcpe:/h:hp:computer:-
Lenovo Computerall versionscert_bundDEcpe:/h:lenovo:computer:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
AMD AMD EPYC™ 7003 Series Processors< MilanPI 1.0.0.Denisa_euvdEU
AMD AMD EPYC™ 8004 Series Processors< GenoaPI 1.0.0.Cenisa_euvdEU
AMD AMD EPYC™ 9004 Series Processors< GenoaPI 1.0.0.Cenisa_euvdEU
AMD AMD EPYC™ Embedded 7003 Series Processors< EmbMilanPI-SP3 1.0.0.9enisa_euvdEU
AMD AMD EPYC™ Embedded 9004 Series Processors< EmbGenoaPI-SP5 1.0.0.9enisa_euvdEU
AMD AMD Ryzen™ 5000 Series Desktop Processors< ComboAM4v2 1.2.0.Cbenisa_euvdEU
AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics< CezannePI-FP6_1.0.1.1enisa_euvdEU
AMD AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics< RembrandtPI-FP7/FP7r2_1.0.0.Benisa_euvdEU
AMD AMD Ryzen™ 7000 Series Desktop Processors< ComboAM5 1.2.0.1enisa_euvdEU
AMD AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics< CezannePI-FP6_1.0.1.1enisa_euvdEU
AMD AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics< RembrandtPI-FP7/FP7r2_1.0.0.Benisa_euvdEU

showing 20 of 29

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-1770AMD Prozessoren: Mehrere SchwachstellenDeutsch2025-08-12csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in AMD Prozessoren ausnutzen, um Sicherheitsmaßnahmen zu umgehen, erweiterte Privilegien zu erlangen, beliebigen Code auszuführen, einen Denial-of-Service-Zustand zu verursachen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder nicht näher spezifizierte Angriffe durchzuführen.

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 CVE.org MITRE

published 2025-09-05modified 2026-06-17

references (10)

External citations — patches, advisories, analysis.

scry

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