CVE-2026-42482

CriticalCVSS 9.8/10Last modified Nov 11, 2026

Description

A stack-based buffer overflow in mangle_to_hex_lower() and mangle_to_hex_upper() in src/rp_cpu.c in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted rule file, or via the -j or -k rule options used with password candidates of 128 or more characters. The vulnerability is caused by a bounds check that fails to account for the 2x expansion that occurs when password bytes are converted to hexadecimal.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787 CWE-121

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91fExploit, Mitigation, Third Party Advisory

Timeline

Published: May 1, 2026
Last modified: Nov 11, 2026
NVD status: Modified

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