CVE-2023-20559

highpriority · track · 35EPSS 0.007 · 52 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.67% (52nd) EPSS

CVSS 8.8 · high

Is it mine?

109 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-26

Insufficient control flow management in AmdCpmGpioInitSmm may allow a privileged attacker to tamper with the SMM handler potentially leading to escalation of privileges.

cvss

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

8.8

010

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

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.8highAV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 2.8 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/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-671USCWE-691US

affected products (109)

Products and version ranges known to be affected.

AMD Prozessorall versionscert_bundDEcpe:/h:amd:amd_processor:-
AMD Prozessor Athlonall versionscert_bundDEcpe:/h:amd:amd_processor:athlon
AMD Prozessor EPYCall versionscert_bundDEcpe:/h:amd:amd_processor:epyc
AMD Prozessor Ryzenall versionscert_bundDEcpe:/h:amd:amd_processor:ryzen
Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
HP Computerall versionscert_bundDEcpe:/h:hp:computer:-
HPE ProLiantall versionscert_bundDEcpe:/h:hp:proliant:-
Lenovo Computerall versionscert_bundDEcpe:/o:lenovo:lenovo_computer:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
2nd Gen AMD Ryzen™ Threadripper™ Processorall versionsenisa_euvdEU
3rd Gen AMD Ryzen™ Threadripper™ Processorsall versionsenisa_euvdEU
Ryzen™ 2000 Seriesall versionsenisa_euvdEU
Ryzen™ 3000 Seriesall versionsenisa_euvdEU
Ryzen™ 4000 Seriesall versionsenisa_euvdEU
Ryzen™ 5000 Seriesall versionsenisa_euvdEU
Ryzen™ Threadripper™ PRO Processorall versionsenisa_euvdEU
Advanced Micro Devices Inc. AMD Ryzen 3000 Series Desktop Processors≤ comboam4_v2_pi_1.2.0.6cfstec_bduRU
Advanced Micro Devices Inc. AMD Ryzen 5000 Series Desktop Processors≤ cezannepi-fp6_1.0.0.9fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU

showing 20 of 109

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-0073AMD Prozessoren: Mehrere SchwachstellenDeutsch2022-05-10csaf · cert_bundDE
Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in AMD Prozessoren ausnutzen, um seine Privilegien zu erhöhen, beliebigen Code auszuführen, einen Denial-of-Service-Zustand zu verursachen, vertrauliche Informationen offenzulegen, Sicherheitsmaßnahmen zu umgehen und Daten zu manipulieren.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2023-04-02modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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