CVE-2026-42483: Hashcat

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted Kerberos hash file. The issue affects module_hash_decode in multiple Kerberos-related modules because account_info_len is calculated from untrusted delimiter positions without upper-bound validation before memcpy copies the data into a fixed-size account_info buffer.

Affected products

• Hashcat Hashcat: version 7.1.2 only

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