What’s Vulnerable › Vulnerabilities

CVE-2025-64031

• Severity: low (CVSS 2.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-14 · updated 2026-10-14
• Weakness: CWE-122

Description

libarchive 3.8.x before 3.8.2 has a strcpy heap-based buffer overflow in the gzip writer via the original-filename field to archive_compressor_gzip_open in archive_write_add_filter_gzip.c, aka GHSA-92wx-p669-8gr9. This relates to bsdtar. Exploitation envisions a marginally plausible scenario in which original-filename is obtained from an untrusted party. (original-filename is not derived from the input data.)

Affected products

• libarchive: from 3.8.0 before 3.8.2 — fixed in 3.8.2

How to fix

Upgrade to a fixed version: libarchive 3.8.2. Check the vendor advisory for mitigations.

References

• https://gist.github.com/ttuurrnn/1365a4a9b1c3d5826a3a9bbe111f26b8
• https://github.com/libarchive/libarchive/blob/master/libarchive/archive_write_add_filter_gzip.c
• https://github.com/libarchive/libarchive/pull/2734
• https://github.com/libarchive/libarchive/pull/2734/commits
• https://github.com/libarchive/libarchive/pull/2734/files
• https://gist.github.com/ttuurrnn/1365a4a9b1c3d5826a3a9bbe111f26b8

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