CVE-2023-31356: amd64-microcode Incomplete Cleanup
CVSS: 4.4v3.1MediumDeferred
AliasesRHSA-2024:7482UBUNTU-CVE-2023-31356DEBIAN-CVE-2023-31356
Published 13-08-2024Last modified 11-02-2025
Vulnerability summary
CVE-2023-31356 is a medium (CVSS 4.4) Incomplete Cleanup vulnerability in amd64-microcode. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 11% of scored vulnerabilities.
CVSS score
4.4/10
010
Medium · v3.1 (CVE.org)EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 5 · Related 1Timeline
- 13-08-2024PublishedVulnerability first disclosed.
- 11-02-2025Last modifiedVulnerability information updated.
Description
Incomplete system memory cleanup in SEV firmware could allow a privileged attacker to corrupt guest private memory, potentially resulting in a loss of data integrity.
CVSS metrics
5 scores · 5 sources · 1 versionMedium 4.4Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:NSourcesAll 5 agree
- OSV · Red hatEcosystem advisory · calculated4.4MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
- OSV · UbuntuEcosystem advisory · calculated4.4MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated4.4MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
- NVDNIST4.4MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
0.21%
Chance of exploitation in the next 30 days
Percentile
11%
Versus all other CVEs
30-day change
0.00 pp
From 0.21% on 19-09-2026
19-09-202619-10-2026
EPSS score0.21%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat21 products
- iwl100-firmware< 0:39.31.5.1-118.3.el8_8.1
- iwl1000-firmware< 1:39.31.5.1-118.3.el8_8.1
- iwl105-firmware< 0:18.168.6.1-118.3.el8_8.1
- iwl135-firmware< 0:18.168.6.1-118.3.el8_8.1
- iwl2000-firmware< 0:18.168.6.1-118.3.el8_8.1
Debian1 product
- amd64-microcode< 3.20240820.1~deb12u1 | < 3.20240820.1
Ubuntu1 product
- amd64-microcode< 3.20250311.1ubuntu0.24.04.1
3 vendors · 23 products
