CVE-2025-9810: linenoise (CVSS 6.8)

Description

TOCTOU in linenoiseHistorySave in linenoise allows local attackers to overwrite arbitrary files and change permissions via a symlink race between fopen("w") on the history path and subsequent chmod() on the same path.

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CVSS v3.1 Score

6.8

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

Weakness Type (CWE)

CWE-367 CWE-367

Affected Products

Vendor	Product	Versions
antirez	linenoise	All

References

Other References

https://github.com/antirez/linenoise/blob/master/linenoise.c#L1321 https://github.com/antirez/linenoise/pull/202 https://github.com/antirez/linenoise/blob/4111f1d6cd29e136b4e86a25d1dd859a1e00813b/linenoise.c#L1321 https://github.com/antirez/linenoise/commit/f2558e1e588b1ba384ec73a2cf5c9a46409753db

Frequently Asked Questions

What is CVE-2025-9810? +

TOCTOU in linenoiseHistorySave in linenoise allows local attackers to overwrite arbitrary files and change permissions via a symlink race between fopen("w") on the history path and subsequent chmod() on the same path. It has a CVSS v3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2025-9810? +

CVE-2025-9810 has a CVSS v3.1 score of 6.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-9810? +

CVE-2025-9810 affects products from antirez, specifically: linenoise. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-9810? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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