CVE-2026-42483 Memory corruption in n/a
A heap-based buffer overflow in hashcat allows attackers to execute arbitrary code or cause denial of service via crafted Kerberos hash files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-42483?
CVE-2026-42483 is a high-severity memory corruption vulnerability in n/a, published on 1 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-42483?
It affects 1 product.
Products include Hashcat Hashcat.
How do I fix CVE-2026-42483?
No fix has been published for CVE-2026-42483 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-42483 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42483 exists.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2026-42483, GHSA-h95h-gpf2-gm79, UBUNTU-CVE-2026-42483.