Vulnerability in Benhoyt Inih
CVE-2025-71450
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/benhoyt/inih/pull/206 (issue-tracking, patch)
- github.com/benhoyt/inih/issues/223 (issue-tracking)
- github.com/benhoyt/inih/commit/8e06f6b77b5d4471bdc6d85ada81b67d37354a5c (patch)
- github.com/benhoyt/inih/blob/r62/ini.c (technical-description)
- github.com/benhoyt/inih/releases/tag/r63 (release-notes)
- hackmd.io/@haindpwn/inih-long-line-discard-oob-read (technical-description)
- www.vulncheck.com/advisories/inih-before-r63-stack-buffer-under-read-in-ini-par… (third-party-advisory)
Frequently asked questions
- What is CVE-2025-71450?
- CVE-2025-71450 is a low-severity vulnerability in Benhoyt Inih, classified under Buffer Under-read. CVSS score: 3.3/10. Published 2026-11-02.
- How severe is CVE-2025-71450?
- Low severity. CVSS v3 base score is 3.3 out of 10.