6.5

CVE-2023-39368: intel-microcode Protection Mechanism Failure

Deferred
AliasesALPINE-CVE-2023-39368UBUNTU-CVE-2023-39368DEBIAN-CVE-2023-39368
Published 14-03-2024Last modified 13-02-2025

Vulnerability summary

CVE-2023-39368 is a medium (CVSS 6.5) Protection Mechanism Failure vulnerability in intel-microcode. EPSS estimates a 0.76% chance of exploitation in the next 30 days, higher than 55.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.76%
0%100%
Low · +0.01 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 10 · Related 6
DLA-3808-1MGASA-2024-0103OPENSUSE-SU-2024:13769-1RHEA-2024:7620RHSA-2024:9401SUSE-SU-2024:0917-1

Timeline

  1. 14-03-2024
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

Protection mechanism failure of bus lock regulator for some Intel(R) Processors may allow an unauthenticated user to potentially enable denial of service via network access.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.76%

Chance of exploitation in the next 30 days

Percentile

55%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.75% 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: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Alpine1 product
  • intel-ucode< 20240813-r0 | < 20240312-r0
Debian1 product
  • intel-microcode< 3.20240312.1~deb12u1 | < 3.20240312.1
Ubuntu1 product
  • intel-microcodeAll versions (No fix recorded) | < 3.20240514.0ubuntu0.16.04.1+esm1 | < 3.20240514.0ubuntu0.18.04.1+esm1 | < 3.20240514.0ubuntu0.20.04.1 | < 3.20240514.0ubuntu0.22.04.1

3 vendors · 3 products

References

8 links