Integer overflow in Libarchive
CVE-2025-5916
A vulnerability has been identified in the libarchive library. This flaw involves an integer overflow that can be triggered when processing a Web Archive (WARC) file that claims to have more than INT64_MAX - 4 content bytes. An attacker could craft a malicious WARC archive to induce this overflow, potentially leading to unpredictable program behavior, memory corruption, or a denial-of-service condition within applications that process such archives using libarchive. This bug affects libarchive versions prior to 3.8.0.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.9 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (7.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Libarchive
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat In-Vehicle Operating System 1
- Red Hat Openshift Container Platform 4
- Red Hat Enterprise Linux — versions 6.0, 7.0, 8.0
- Red Hat Openshift Container Platform — versions 4.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/security/cve/CVE-2025-5916 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking)
- github.com/libarchive/libarchive/pull/2568 (Patch)
- github.com/libarchive/libarchive/releases/tag/v3.8.0 (Release Notes)
Frequently asked questions
- What is CVE-2025-5916?
- CVE-2025-5916 is a low-severity vulnerability in Libarchive, classified under Integer Overflow or Wraparound. CVSS score: 3.9/10. Published 2025-06-09.
- How severe is CVE-2025-5916?
- Low severity. CVSS v3 base score is 3.9 out of 10.
- Is CVE-2025-5916 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.