CVE-2025-5918: libarchive Out-of-bounds Read
Vulnerability summary
CVE-2025-5918 is a medium (CVSS 6.6) Out-of-bounds Read vulnerability in libarchive. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 30.1% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 7 · Related 6Timeline
- 09-06-2025PublishedVulnerability first disclosed.
- 01-09-2026Last modifiedVulnerability information updated.
Description
A vulnerability has been identified in the libarchive library. This flaw can be triggered when file streams are piped into bsdtar, potentially allowing for reading past the end of the file. This out-of-bounds read can lead to unintended consequences, including unpredictable program behavior, memory corruption, or a denial-of-service condition.
CVSS metrics
4 scores · 4 sources · 1 version- CVE.orgCNA3.9LowCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:LDiffers
- OSV · UbuntuEcosystem advisory · calculated6.6MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.6MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H
EPSS trend
Probability
0.38%
Chance of exploitation in the next 30 days
Percentile
30%
Versus all other CVEs
30-day change
+0.01 pp
From 0.37% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat2 products
- enterprise_linuxEOL6.0 | 7.0 | 8.0 | 9.0
- openshift_container_platform4.0
Debian1 product
- libarchive< 3.6.2-1+deb12u4 | < 3.7.4-4+deb13u1 | < 3.8.4-1
Libarchive1 product
- libarchive< 3.8.0
Ubuntu1 product
- libarchive< 3.1.2-7ubuntu2.8+esm4 | < 3.1.2-11ubuntu0.16.04.8+esm2 | < 3.2.2-3.1ubuntu0.7+esm2 | < 3.4.0-2ubuntu1.5+esm1 | < 3.6.0-1ubuntu1.6 | < 3.7.2-2ubuntu0.6 | < 3.7.7-0ubuntu3.1
4 vendors · 5 products
