Vulnerability Description
A heap-based buffer overflow in hex_to_binary in the PKZIP hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted PKZIP hash file. The issue affects modules 17200, 17210, 17220, 17225, and 17230. When data_type_enum<=1, attacker-controlled hex data from a user-supplied hash string is decoded into a fixed-size buffer without proper input-length validation.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Hashcat | Hashcat | 7.1.2 |
Related Weaknesses (CWE)
References
- https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91fExploitMitigationThird Party Advisory
- https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91fExploitMitigationThird Party Advisory
FAQ
What is CVE-2026-42484?
CVE-2026-42484 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A heap-based buffer overflow in hex_to_binary in the PKZIP hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted PKZIP hash fil...
How severe is CVE-2026-42484?
CVE-2026-42484 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-42484?
Check the references section above for vendor advisories and patch information. Affected products include: Hashcat Hashcat.