CVE-2026-42483

CRITICAL

9.8

Description

A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted Kerberos hash file. The issue affects module_hash_decode in multiple Kerberos-related modules because account_info_len is calculated from untrusted delimiter positions without upper-bound validation before memcpy copies the data into a fixed-size account_info buffer.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published5/1/2026

Last Modified5/1/2026

Sourcenvd

Honeypot Sightings0

Affected Products

hashcat:hashcat

Weaknesses (CWE)

CWE-787CWE-122

References

https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91f(cve@mitre.org)

https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91f(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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