CVE-2025-71450 json
inih before r63 Stack Buffer Under-Read in ini_parse_stream Discard Loop
published 2026-11-02 7 d ago modified 2026-11-06 2 d ago also EUVD-2025-211238
- cvss
- 3.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 2%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- benhoyt inih r63
- inih openSUSE Tumbleweed 63-1.1
opensuse advisories openSUSE-SU-2026:12432-1
- github.com/benhoyt/inih@8e06f6b commit
- github.com/benhoyt/inih#206 pull request
- github.com/benhoyt/inih/releases/tag/r63 release
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 d ago
Exploit prediction
0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hackmd.io https://hackmd.io/@haindpwn/cve-2025-71450-inih-long-line-discard-oob-read#Detailed-attack-steps referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 4.8 | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| CNA | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| CNA | 4.0 | 4.8 | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- benhoyt inih
Classification
- Weakness
-
- CWE-127 Buffer Under-read
References
-
github.com
/benhoyt/inih/pull/206
issue-tracking, patch
-
github.com
/benhoyt/inih/commit/8e06f6b77b5d4471bdc6d85ada81b67d37354a5c
patch
-
hackmd.io
/@haindpwn/cve-2025-71450-inih-long-line-discard-oob-read#Detailed-attack-steps
exploit
-
github.com
/benhoyt/inih/issues/223
issue-tracking
-
github.com
/benhoyt/inih/blob/r62/ini.c#L162-L169
technical-description
-
github.com
/benhoyt/inih/releases/tag/r63
release-notes
-
hackmd.io
/@haindpwn/inih-long-line-discard-oob-read
technical-description
-
vulncheck.com
/advisories/inih-before-r63-stack-buffer-under-read-in-ini-parse-stream-discard-loop
third-party-advisory
Sources
- CVE List CVE-2025-71450
- NVD CVE-2025-71450
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.