# CVE-2025-64031

## Summary

- **CVE ID:** CVE-2025-64031
- **Severity:** LOW
- **CVSS Score:** 2.5 (CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L)
- **CWE:** CWE-122
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 16, 2026

## 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 — libarchive (3.8.0)

## References

- [CNA](https://github.com/libarchive/libarchive/pull/2734)
- [CNA](https://github.com/libarchive/libarchive/pull/2734/commits)
- [CNA](https://github.com/libarchive/libarchive/pull/2734/files)
- [CNA](https://github.com/libarchive/libarchive/blob/master/libarchive/archive_write_add_filter_gzip.c)
- [CNA](https://gist.github.com/ttuurrnn/1365a4a9b1c3d5826a3a9bbe111f26b8)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.12%
- **EPSS Percentile:** 2.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._