CVE-2026-16517
lowA signed integer overflow vulnerability was found in libarchive's ZIP writer.
A signed integer overflow vulnerability was found in libarchive's ZIP writer. In the archive_write_zip_header function in archive_write_set_format_zip.c, when ZIP encryption is enabled and the entry file size is close to INT64_MAX, the addition of the encryption overhead to the entry size overflows int64_t, resulting in undefined behavior. This could lead to incorrect Zip64 extension decisions or potential memory corruption.
CVSS
2.9
2.9 (CVSS v3.1)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-07-21 23:17
Modified: 2026-11-02 19:18
NVD status: Awaiting Analysis
Last synced 1 day ago
Verified against the source API 2026-11-03 07:34 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://access.redhat.com/errata/RHSA-2026:43818 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:69553 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-16517 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2505492 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 07:34 UTC · record ↗