Buffer Overflow Vulnerability in Hashcat Kerberos Hash Parser
CVE-2026-42483

7.3HIGH

Key Information:

Vendor

Hashcat

Status
Hashcat
Vendor
CVE Published:
1 May 2026

What is CVE-2026-42483?

A heap-based buffer overflow vulnerability exists in the Kerberos hash parser of Hashcat v7.1.2. This flaw allows attackers to potentially execute arbitrary code or trigger a denial of service condition by supplying a specially crafted Kerberos hash file. The vulnerability stems from improper handling of untrusted delimiter positions while calculating account information lengths, leading to unsafe memory operations within the affected modules.

References

https://gist.github.com/sgInnora/107f2eb20367e47d58c911e3...

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.