CVE-2026-42482

critical · 9.8

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.

9.8

CVSS

0.4%

EPSS (exploit prob.)

34th

EPSS percentile

2026-05-01

Published

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

Weaknesses

CWE-787CWE-121

Affected products

Vendor	Product	Affected versions
hashcat	hashcat	7.1.2

Check a specific version with /api/v1/cve/match.

References

https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91f

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-42482