CVE-2026-42483

A heap-based buffer overflow in the Kerberos hash parser in hashcat v7 ...

Published 1 May 2026Modified 17 Jun 2026CWE 787, 122

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD.

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.

Affected packages and fixed versions

Source	Package	Fixed in
debian 11	hashcat	no fix listed
debian 12	hashcat	no fix listed
debian 13	hashcat	no fix listed
debian 14	hashcat	no fix listed
echo	hashcat	no fix listed
rapidfort debian 12	hashcat	no fix listed
rapidfort debian 13	hashcat	no fix listed
rapidfort ubuntu 20.04	hashcat	no fix listed
rapidfort ubuntu 22.04	hashcat	no fix listed
rapidfort ubuntu 24.04	hashcat	no fix listed

References

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

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Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.