hashcat through 7.1.2 Off-by-One Out-of-Bounds Heap Write in fgetl()
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
hashcat's fgetl() function in src/filehandling.c writes a null terminator one byte past the caller's buffer when an input line is exactly the buffer length. Attackers can trigger this out-of-bounds heap write by providing a hash file, potfile, or wordlist containing a line of exactly HCBUFSIZ_LARGE bytes.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-68767
- 2026-10-03 Alias added: GHSA-vgv2-whp7-2895
References
More hashcat vulnerabilities
- 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-2026-30767 A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an… CVSS 3.1CRITICAL 9.8
- TI-2026-48348 hashcat through 7.1.2 Arbitrary File Write via Restore File Option Injection CVSS 4.0HIGH 8.5
- TI-2026-48350 hashcat through 7.1.2 Heap Buffer Overflow in outfile_write() via Oversized Username CVSS 4.0MEDIUM 6.9
- TI-2026-30766 A stack-based buffer overflow in mangle_to_hex_lower() and mangle_to_hex_upper() in… CVSS 3.1CRITICAL 9.8
- TI-2026-48347 hashcat KeePass KDBX v4 Module Heap Buffer Overflow via Token Field CVSS 4.0MEDIUM 5.2
Sources
- CVE-2026-68767 · CVE Program
- CVE-2026-68767 · NVD
- FIRST EPSS
- GHSA-vgv2-whp7-2895 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-68767 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences