CVE-2026-68767

EUVD-2026-64312
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
6.1 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 5.97%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
hashcathashcat
𝑥
≤ 7.1.2
CNA
Debian logo
Debian Releases
Debian Product
Codename
hashcat
bookworm
unimportant
forky
unimportant
sid
unimportant
trixie
unimportant
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
hashcat
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
Common Weakness Enumeration
References
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