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THREAT OPS › Threat News › [NVD] CVE-2026-4426 (MEDIUM 6.5) — A flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression logic, caused by improper validation of a field (`pz_log2_bs`) read from ISO9660 Rock Ridge extensions. A remote attacker can exploit this by supplying a specially crafted ISO f

[NVD] CVE-2026-4426 (MEDIUM 6.5) — A flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression logic, caused by improper validation of a field (`pz_log2_bs`) read from ISO9660 Rock Ridge extensions. A remote attacker can exploit this by supplying a specially crafted ISO f

lownvdPublished 2026-03-19

CVE-2026-4426 CVSS: 6.5 MEDIUM Published: 2026-03-19T15:16:28.510

A flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression logic, caused by improper validation of a field (`pz_log2_bs`) read from ISO9660 Rock Ridge extensions. A remote attacker can exploit this by supplying a specially crafted ISO file. This can lead to incorrect memory allocation and

Indicators of compromise

CVE-2026-4426cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-4426