5.5

CVE-2023-20588: Speculative Leaks

Modified
AliasesALPINE-CVE-2023-20588UBUNTU-CVE-2023-20588DEBIAN-CVE-2023-20588
Published 08-08-2023Last modified 17-10-2024

Vulnerability summary

CVE-2023-20588 is a medium (CVSS 5.5) Divide By Zero vulnerability in amd athlon_gold_3150g_firmware. EPSS estimates a 11.15% chance of exploitation in the next 30 days, higher than 95.9% of scored vulnerabilities.

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
11.15%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 43 · Related 40

Timeline

  1. 08-08-2023
    PublishedVulnerability first disclosed.
  2. 17-10-2024
    Last modifiedVulnerability information updated.

Description

A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

11.15%

Chance of exploitation in the next 30 days

Percentile

96%

Versus all other CVEs

30-day change

No change 0.00 pp

From 11.15% 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

0 found

No public exploits indexed.

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.

Ubuntu105 products
  • linuxAll versions (No fix recorded) | < 4.4.0-250.284 | < 4.15.0-221.232 | < 5.4.0-163.180 | < 5.15.0-84.93
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1127.133 | < 4.4.0-1164.179 | < 4.15.0-1164.177 | < 5.4.0-1110.119 | < 5.15.0-1045.50
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Amd36 products
Microsoft13 products
Debian3 products
  • linux< 6.1.52-1 | < 6.4.13-1
  • xen< 4.17.2+76-ge1f9cb16e2-1~deb12u1 | < 4.17.2+55-g0b56bed864-1
  • debian_linuxEOL10.0 | 11.0 | 12.0
Alpine1 product
  • xen< 4.15.5-r2 | < 4.16.5-r2 | < 4.17.2-r2
Fedoraproject1 product
Xen1 product

7 vendors · 160 products

References

46 links
Show all 46 references