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TI-2026-30767 Aliases CVE-2026-42483GHSA-h95h-gpf2-gm79

A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an…

Priority HIGH 81CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00304 23rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:hashcat:hashcat:7.1.2:*:*:*:*:*:*:*7.1.2Vulnerablehashcat
  • cpe:2.3:a:hashcat:hashcat:7.1.2:*:*:*:*:*:*:* Versions 7.1.2 Vulnerable ·hashcat

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42483
  2. 2026-10-03 Alias added: GHSA-h95h-gpf2-gm79

References

Exploit 1

  • TI-2026-30768 A heap-based buffer overflow in hex_to_binary in the PKZIP hash parser in hashcat v7.1.2… CVSS 3.1CRITICAL 9.8
  • TI-2026-30766 A stack-based buffer overflow in mangle_to_hex_lower() and mangle_to_hex_upper() in… CVSS 3.1CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences