CVE-2026-42483

CRITICAL

hashcat 7.1.2 - Heap-based Buffer Overflow in Kerberos Hash Parser

Title source: llm
STIX 2.1

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.

Scores

CVSS v3 9.8
EPSS 0.0030
EPSS Percentile 22.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-122 CWE-787
Status published
Products (1)
hashcat/hashcat 7.1.2
Published May 01, 2026
Tracked Since May 01, 2026