A heap-based buffer overflow in hex_to_binary in the PKZIP hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted PKZIP hash file. The issue affects modules 17200, 17210, 17220, 17225, and 17230. When data_type_enum<=1, attacker-controlled hex data from a user-supplied hash string is decoded into a fixed-size buffer without proper input-length validation.

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History

Sat, 02 May 2026 11:15:00 +0000

Type Values Removed Values Added
Title Heap-Based Buffer Overflow in PKZIP Hash Parser of hashcat

Fri, 01 May 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


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 hex_to_binary in the PKZIP hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted PKZIP hash file. The issue affects modules 17200, 17210, 17220, 17225, and 17230. When data_type_enum<=1, attacker-controlled hex data from a user-supplied hash string is decoded into a fixed-size buffer without proper input-length validation.
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-05-01T18:35:16.342Z

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

Link: CVE-2026-42484

cve-icon Vulnrichment

Updated: 2026-05-01T18:35:11.906Z

cve-icon NVD

Status : Modified

Published: 2026-05-01T14:16:22.800

Modified: 2026-05-01T19:16:33.000

Link: CVE-2026-42484

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-02T11:00:06Z

Weaknesses