CVE-2026-16517CWE-190

CVE-2026-16517

Low · published July 22, 2026

CVSS v3.1
2.9
EPSS
0%
Percentile
0.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
2.9 · LOW
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00079 · 0.1th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2026-07-22T03:17Z
References (4)
https://access.redhat.com/errata/RHSA-2026:43818 · [email protected]https://access.redhat.com/errata/RHSA-2026:69553 · [email protected]https://access.redhat.com/security/cve/CVE-2026-16517 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2505492 · [email protected]
EPSS history
Timeline
  • 21 JUL 22:41Z
    Libarchive: libarchive: signed integer overflow in archive_write_zip_header
    cvelistv5