4.7

CVE-2023-20569: amd 1st gen amd epyc™ processors Observable Discrepancy

Modified
AliasesALPINE-CVE-2023-20569SUSE-SU-2023:3262-1SUSE-SU-2023:3298-1
Published 08-08-2023Last modified 23-09-2024

Vulnerability summary

CVE-2023-20569 is a medium (CVSS 4.7) Observable Discrepancy vulnerability in amd 1st gen amd epyc™ processors. EPSS estimates a 7.30% chance of exploitation in the next 30 days, higher than 94.3% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 4.7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.7/10
010
Medium · v3.1 (NVD)
EPSS score
7.30%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 86 · Related 67
DLA-3525-1DSA-5475-1MGASA-2023-0249MGASA-2023-0250MGASA-2023-0251OPENSUSE-SU-2024:13112-1

Timeline

  1. 08-08-2023
    PublishedVulnerability first disclosed.
  2. 23-09-2024
    Last modifiedVulnerability information updated.

Description

A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction. This may result in speculative execution at an attacker-controlled address, potentially leading to information disclosure.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

7.30%

Chance of exploitation in the next 30 days

Percentile

94%

Versus all other CVEs

30-day change

No change 0.00 pp

From 7.30% 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 (comsec.ethz.ch)

    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.

Amd166 products
Ubuntu31 products
  • amd64-microcodeAll versions (No fix recorded) | < 3.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm2 | < 3.20191021.1+really3.20181128.1~ubuntu0.18.04.1+esm2 | < 3.20191218.1ubuntu1.2 | < 3.20191218.1ubuntu2.2 | < 3.20230808.1.1ubuntu1
  • linuxAll versions (No fix recorded) | < 5.15.0-112.122
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1063.69
  • linux-aws-5.0All versions (No fix recorded)
Debian2 products
  • amd64-microcode< 3.20230719.1~deb12u1 | < 3.20230719.1
  • linux< 6.1.38-4 | < 6.4.4-3
Alpine1 product
  • xen< 4.15.5-r0 | < 4.16.5-r0 | < 4.17.2-r0

4 vendors · 200 products · Showing 200 of 339

References

50 links
Show all 50 references