CVE-2026-42484: Hashcat

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

A heap-based buffer overflow in hex_to_binary in the PKZIP hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted PKZIP hash file. The issue affects modules 17200, 17210, 17220, 17225, and 17230. When data_type_enum<=1, attacker-controlled hex data from a user-supplied hash string is decoded into a fixed-size buffer without proper input-length validation.

Affected products

• Hashcat Hashcat: version 7.1.2 only

Published 2026-05-01. Last modified 2026-06-17.