CVE-2026-68767

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.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/hashcat/hashcat
https://github.com/hashcat/hashcat/blob/v7.1.2/src/filehandling.c#L1032-L1060
https://github.com/hashcat/hashcat/commit/93b55d37d3b2340013d4036f10181ddc67d44249
https://github.com/hashcat/hashcat/issues/4739
https://www.vulncheck.com/advisories/hashcat-through-off-by-one-out-of-bounds-heap-write-in-fgetl

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-22 15:16

Updated : 2026-08-26 17:17

NVD link : CVE-2026-68767

Mitre link : CVE-2026-68767

CVE.ORG link : CVE-2026-68767

JSON object : View

Products Affected

No product.

CWE

CWE-193

Off-by-one Error

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