Buffer overflow in Libarchive
CVE-2025-5917
A vulnerability has been identified in the libarchive library. This flaw involves an 'off-by-one' miscalculation when handling prefixes and suffixes for file names. This can lead to a 1-byte write overflow. While seemingly small, such an overflow can corrupt adjacent memory, leading to unpredictable program behavior, crashes, or in specific circumstances, could be leveraged as a building block for more sophisticated exploitation. This bug affects libarchive versions prior to 3.8.0.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.8 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (8.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.4% 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-2025-5917 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking)
- github.com/libarchive/libarchive/pull/2588 (Patch)
- github.com/libarchive/libarchive/releases/tag/v3.8.0 (Release Notes)
Frequently asked questions
- What is CVE-2025-5917?
- CVE-2025-5917 is a low-severity vulnerability in Libarchive, classified under Out-of-bounds Write. CVSS score: 2.8/10. Published 2025-06-09.
- How severe is CVE-2025-5917?
- Low severity. CVSS v3 base score is 2.8 out of 10.
- Is CVE-2025-5917 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.