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Low severity · published Sep 14, 2026
CVE-2025-64031
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…
2.5
CVSS
0.2%
EPSS
No
On KEV
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.)
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack vector
Local
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
libarchive · libarchive
3.8.0 before 3.8.2 · source: vendor
Affected product
LI
libarchive
libarchive
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-64031
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-64031
gist.github.com
https://gist.github.com/ttuurrnn/1365a4a9b1c3d5826a3a9bbe111f26b8
github.com
https://github.com/libarchive/libarchive/blob/master/libarchive/archive_write_add_filter_gzip.c
github.com
https://github.com/libarchive/libarchive/pull/2734
github.com
https://github.com/libarchive/libarchive/pull/2734/commits
github.com
https://github.com/libarchive/libarchive/pull/2734/files
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