CVE-2026-42482

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91f	Exploit Mitigation Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:hashcat:hashcat:7.1.2:*:*:*:*:*:*:*

History

01 May 2026, 19:16

Type	Values Removed	Values Added
CWE		CWE-121

01 May 2026, 17:45

Type	Values Removed	Values Added
References	~~() https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91f -~~	() https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91f - Exploit, Mitigation, Third Party Advisory
CPE		cpe:2.3:a:hashcat:hashcat:7.1.2:::::::*
First Time		Hashcat hashcat Hashcat
CWE		CWE-787
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.8

01 May 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-01 14:16

Updated : 2026-05-01 19:16

NVD link : CVE-2026-42482

Mitre link : CVE-2026-42482

CVE.ORG link : CVE-2026-42482

JSON object : View

Products Affected

hashcat

hashcat

CWE

CWE-787

Out-of-bounds Write

CWE-121

Stack-based Buffer Overflow

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