CVE-2023-20555

highpriority · track · 31EPSS 0.003 · 25 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.32% (25th) EPSS

CVSS 7.8 · high

Is it mine?

189 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Insufficient input validation in CpmDisplayFeatureSmm may allow an attacker to corrupt SMM memory by overwriting an arbitrary bit in an attacker-controlled pointer potentially leading to arbitrary code execution in SMM.

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

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

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-787USprimaryCWE-787US

affected products (189)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Citrix Systems Hypervisorall versionscert_bundDEcpe:/o:citrix:hypervisor:-
Citrix Systems XenServerall versionscert_bundDEcpe:/a:citrix:xenserver:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Dell BIOSall versionscert_bundDEcpe:/h:dell:bios:-
Dell NetWorker vProxy<19.10all versionscert_bundDE
Dell NetWorker vProxy<19.9.0.4all versionscert_bundDE
Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
HP BIOS UEFI Firmwareall versionscert_bundDEcpe:/h:hp:bios:uefi_firmware
HP Computerall versionscert_bundDEcpe:/h:hp:computer:-
HPE ProLiantall versionscert_bundDEcpe:/h:hp:proliant:-
IBM QRadar SIEM 7.5all versionscert_bundDEcpe:/a:ibm:qradar_siem:7.5
IGEL OSall versionscert_bundDEcpe:/o:igel:os:-
Lenovo BIOSall versionscert_bundDEcpe:/h:lenovo:bios:-
Lenovo Computerall versionscert_bundDEcpe:/h:lenovo:computer:-
Nutanix AHVall versionscert_bundDEcpe:/o:nutanix:ahv:-
Open Source CentOSall versionscert_bundDEcpe:/o:centos:centos:-
Open Source Xenall versionscert_bundDEcpe:/o:xen:xen:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-

showing 20 of 189

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2001AMD Prozessoren: Mehrere SchwachstellenDeutsch2023-08-08csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in AMD Prozessoren ausnutzen, um beliebigen Programmcode auszuführen oder Informationen offenzulegen.

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 2023-08-08modified 2026-06-17

related (16,125)

Related entries.

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+16120 more

references (4)

External citations — patches, advisories, analysis.

scry

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