CVE-2026-68767
hashcat through 7.1.2 Off-by-One Out-of-Bounds Heap Write in fgetl()
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-193 |
| Vendor | hashcat |
| Product | hashcat |
| Published | Aug 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High
Affected Versions
hashcat / hashcat
0 ≤ 7.1.2
References
github.com: https://github.com/hashcat/hashcat/issues/4739 github.com: https://github.com/hashcat/hashcat github.com: https://github.com/hashcat/hashcat/commit/93b55d37d3b2340013d4036f10181ddc67d44249 github.com: https://github.com/hashcat/hashcat/blob/v7.1.2/src/filehandling.c#L1032-L1060 vulncheck.com: https://www.vulncheck.com/advisories/hashcat-through-off-by-one-out-of-bounds-heap-write-in-fgetl
Credits
Piotr Kowalczyk