PT-2026-36353 · Hashcat · Hashcat

Sginnora · Published 2026-05-01 · Updated 2026-05-01 · CVE-2026-42484

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions hashcat version 7.1.2

Description A heap-based buffer overflow exists in the hex to binary function within the PKZIP hash parser. This occurs when data type enum is less than or equal to 1, allowing attacker-controlled hex data from a user-supplied hash string to be decoded into a fixed-size buffer without proper input-length validation. This issue affects modules 17200, 17210, 17220, 17225, and 17230, and could lead to a denial of service or arbitrary code execution via a crafted PKZIP hash file.

Recommendations As a temporary workaround, restrict the use of modules 17200, 17210, 17220, 17225, and 17230 until a fix is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-42484

Affected Products

Hashcat

References · 3

• 🔥 https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91f · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-42484 · Security Note
• https://twitter.com/VulmonFeeds/status/2050225679422132527 · Twitter Post