PT-2026-36351 · Hashcat · Hashcat

Feng Ning · Published 2026-05-01 · Updated 2026-05-13 · CVE-2026-42482

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 stack-based buffer overflow occurs in the mangle to hex lower() and mangle to hex upper() functions within src/rp cpu.c. This issue arises from a bounds check that fails to account for the 2x expansion when password bytes are converted to hexadecimal. An attacker can exploit this via a crafted rule file or by using the -j or -k rule options with password candidates of 128 characters or more, potentially leading to a denial of service or arbitrary code execution.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Stack Overflow

Memory Corruption

Weakness Enumeration

CWE-121

CWE-787

Related Identifiers

CVE-2026-42482

Affected Products

Hashcat

References · 12

• 🔥 https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91f · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-42482 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-42482 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-42482 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-42482 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-42482 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-42482 · Security Note
• https://twitter.com/lyrie_ai/status/2054464407795556397 · Twitter Post
• https://twitter.com/lyrie_ai/status/2054464405241270290 · Twitter Post
• https://twitter.com/lyrie_ai/status/2054464406046614007 · Twitter Post
• https://t.me/cveNotify/161773 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2050230799086030907 · Twitter Post