How severe is CVE-2025-9810?

CVE-2025-9810 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.

Is CVE-2025-9810 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-9810?

CVE-2025-9810 affects Antirez Linenoise. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-9810?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-9810 have an EU (EUVD) identifier?

Yes. CVE-2025-9810 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26353.

When was CVE-2025-9810 published?

CVE-2025-9810 was published on 2025-09-01 and last updated on 2026-06-17.

CVE-2025-9810

CVE-2025-9810 is a medium-severity vulnerability in Antirez Linenoise with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-367.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-26353
Weakness: CWE-367
Affected product: Antirez Linenoise
Published: 2025-09-01
Last modified: 2026-06-17

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.

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.
How severe is CVE-2025-9810?: CVE-2025-9810 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.
Is CVE-2025-9810 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-9810?: CVE-2025-9810 affects Antirez Linenoise. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-9810?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-9810 have an EU (EUVD) identifier?: Yes. CVE-2025-9810 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26353.
When was CVE-2025-9810 published?: CVE-2025-9810 was published on 2025-09-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:antirez:linenoise:-:*:*:*:*:*:*:*

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