SB2026082519 - Out-of-bounds write in libarchive
Published: August 25, 2026
Security Bulletin ID
SB2026082519
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2026-45308)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause memory corruption.
The vulnerability exists due to out-of-bounds write in the ZIP writer in libarchive/archive_write_set_format_zip.c when converting an archive entry with an oversized pathname to ZIP. A remote attacker can supply a crafted archive entry with a very long pathname to cause memory corruption.
User interaction is required to process a crafted archive and re-pack it as ZIP.
Remediation
Install update from vendor's website.