Is there a public exploit for CVE-2026-16517?

No public exploit for CVE-2026-16517 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-16517?

CVE-2026-16517 scores CVSS 2.9 (v3.1), rated low. EPSS puts the chance of exploitation in the next 30 days at 0.11%.

What does CVE-2026-16517 affect?

CVE-2026-16517 affects Red Hat Red Hat Hardened Images, Red Hat Enterprise Linux 10.

2.9 Low

A signed integer overflow vulnerability was found in libarchive's ZIP writer.

CVE-2026-16517

A signed integer overflow vulnerability was found in libarchive's ZIP writer. In the archivewritezipheader function in archivewritesetformatzip.c, when ZIP encryption is enabled and the entry file size is close to INT64MAX, the addition of the encryption overhead to the entry size overflows int64t, resulting in undefined behavior. This could lead to incorrect Zip64 extension decisions or potential memory corruption.

Assessment

CVSS: 2.9 (v3.1)
Severity: Low
EPSS: 0.11% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 21 July 2026
Last updated: 2 November 2026
Affected: Red Hat · Red Hat Enterprise Linux 10 · Red Hat Hardened Images
Assigner: redhat

CVSS vectorCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

At the source

EUVD (ENISA)

References

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