What is CVE-2026-42483?

CVE-2026-42483 is a critical-severity vulnerability in Hashcat, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2026-05-01.

How severe is CVE-2026-42483?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Hashcat

CVE-2026-42483

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 multipl…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (29.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Hashcat — versions 7.1.2
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write
CWE-122 — Heap-based Buffer Overflow

References

cve@mitre.org (Exploit, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2026-42483?: CVE-2026-42483 is a critical-severity vulnerability in Hashcat, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2026-05-01.
How severe is CVE-2026-42483?: Critical severity. CVSS v3 base score is 9.8 out of 10.