5.3

CVE-2023-43490: intel-microcode Incorrect Calculation

Deferred
AliasesALPINE-CVE-2023-43490UBUNTU-CVE-2023-43490DEBIAN-CVE-2023-43490
Published 14-03-2024Last modified 13-02-2025

Vulnerability summary

CVE-2023-43490 is a medium (CVSS 5.3) Incorrect Calculation vulnerability in intel-microcode. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 14.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.3, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.23%
0%100%
Low · 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 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

Incorrect calculation in microcode keying mechanism for some Intel(R) Xeon(R) D Processors with Intel(R) SGX may allow a privileged user to potentially enable information disclosure via local access.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.23% 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, administrative account, no 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