5.5

CVE-2023-20593: amd 2nd gen amd epyc™ processors

Modified
AliasesALPINE-CVE-2023-20593MGASA-2023-0242MGASA-2023-0244
Published 24-07-2023Last modified 13-02-2025

Vulnerability summary

CVE-2023-20593 is a medium (CVSS 5.5) vulnerability in amd 2nd gen amd epyc™ processors. EPSS estimates a 5.07% chance of exploitation in the next 30 days, higher than 92.3% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
5.07%
0%100%
Low · -0.12 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 107 · Related 78
DLA-3508-1DLA-3511-1DLA-3512-1DSA-5461-1MGASA-2023-0243OPENSUSE-SU-2024:13704-1

Showing 100 of 107.

Timeline

  1. 24-07-2023
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

An issue in “Zen 2” CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access sensitive information.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

5.07%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

Decrease -0.12 pp

From 5.19% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (cmpxchg8b.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu106 products
  • amd64-microcodeAll versions (No fix recorded) | < 3.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm1 | < 3.20191021.1+really3.20181128.1~ubuntu0.18.04.1+esm1 | < 3.20191218.1ubuntu1.1 | < 3.20191218.1ubuntu2.1
  • linuxAll versions (No fix recorded) | < 4.4.0-248.282 | < 4.15.0-216.227 | < 5.4.0-159.176 | < 5.15.0-82.91
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1125.131 | < 4.4.0-1163.178 | < 4.15.0-1160.173 | < 5.4.0-1108.116 | < 5.15.0-1043.48
  • linux-aws-5.0All versions (No fix recorded)
Amd77 products
Opensuse9 products
  • kernel-firmware&distro=openSUSE Leap 15.4< 20220509-150400.4.19.1
  • kernel-firmware&distro=openSUSE Leap 15.5< 20230724-150500.3.3.1
  • kernel-firmware&distro=openSUSE Leap Micro 5.3< 20220509-150400.4.19.1
  • kernel-firmware&distro=openSUSE Leap Micro 5.4< 20220509-150400.4.19.1
  • kernel-firmware&distro=openSUSE Tumbleweed< 20230731-1.1
Mageia4 products
  • kernel< 5.15.122-1.mga8
  • kmod-virtualbox< 7.0.10-1.1.mga8
  • kmod-xtables-addons< 3.23-1.23.mga8
  • microcode< 0.20230613-2.mga8.nonfree
Debian3 products
  • amd64-microcode< 3.20230719.1~deb11u1 | < 3.20230719.1~deb12u1 | < 3.20230719.1
  • linux< 6.1.38-2 | < 6.4.4-2
  • debian_linuxEOL10.0 | 11.0 | 12.0
Alpine1 product
  • xen< 4.15.4-r1 | < 4.16.4-r1 | < 4.17.1-r2 | < 4.17.1-r3

6 vendors · 200 products · Showing 200 of 260

References

90 links
Show all 90 references