CVE-2025-71450
inih before r63 Stack Buffer Under-Read in ini_parse_stream Discard Loop
CVSS Score
3.3
EPSS Score
0.0%
EPSS Percentile
0th
inih before r63 contains a one-byte stack buffer under-read in ini_parse_stream() in ini.c that allows attackers to read abyss[-1] via an embedded NUL byte after an overlong line. Attackers can supply an INI file or string with a line of at least INI_MAX_LINE-1 bytes followed by a NUL byte, causing undefined behavior reported by memory sanitizers.
| CWE | CWE-127 |
| Vendor | benhoyt |
| Product | inih |
| Published | Nov 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
benhoyt / inih
0 < r63
References
github.com: https://github.com/benhoyt/inih/pull/206 github.com: https://github.com/benhoyt/inih/issues/223 github.com: https://github.com/benhoyt/inih/commit/8e06f6b77b5d4471bdc6d85ada81b67d37354a5c github.com: https://github.com/benhoyt/inih/blob/r62/ini.c#L162-L169 github.com: https://github.com/benhoyt/inih/releases/tag/r63 hackmd.io: https://hackmd.io/@haindpwn/inih-long-line-discard-oob-read vulncheck.com: https://www.vulncheck.com/advisories/inih-before-r63-stack-buffer-under-read-in-ini-parse-stream-discard-loop
Credits
Fatih Çelik (fatihhcelik) HaiND from the Post and Telecommunication Institute of Technology