CVE-2026-42483

Description

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.

Weakness classification

• nvd@nist.gov: CWE-787
• 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-122

Primary references

• cve@mitre.org — Exploit, Mitigation, Third Party Advisory
• 134c704f-9b21-4f2e-91b3-4a467353bcc0 — Exploit, Mitigation, Third Party Advisory