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.
History

Fri, 01 May 2026 18:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-122
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}


Fri, 01 May 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Hashcat
Hashcat hashcat
Weaknesses CWE-787
CPEs cpe:2.3:a:hashcat:hashcat:7.1.2:*:*:*:*:*:*:*
Vendors & Products Hashcat
Hashcat hashcat
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Fri, 01 May 2026 14:15:00 +0000

Type Values Removed Values Added
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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-05-01T00:00:00.000Z

Updated: 2026-05-01T17:36:27.198Z

Reserved: 2026-04-27T00:00:00.000Z

Link: CVE-2026-42483

cve-icon Vulnrichment

Updated: 2026-05-01T17:35:36.354Z

cve-icon NVD

Status : Modified

Published: 2026-05-01T14:16:22.687

Modified: 2026-05-01T18:16:16.020

Link: CVE-2026-42483

cve-icon Redhat

No data.