How severe is CVE-2026-35373?

CVE-2026-35373 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-35373 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35373?

CVE-2026-35373 affects Uutils Coreutils. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35373?

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

Does CVE-2026-35373 have an EU (EUVD) identifier?

Yes. CVE-2026-35373 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25022.

When was CVE-2026-35373 published?

CVE-2026-35373 was published on 2026-04-22 and last updated on 2026-06-17.

CVE-2026-35373

CVE-2026-35373 is a low-severity vulnerability in Uutils Coreutils with a CVSS 3.x base score of 3.3. 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-176.

Key facts

Severity: Low (CVSS 3.x base score 3.3)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25022
Weakness: CWE-176
Affected product: Uutils Coreutils
Published: 2026-04-22
Last modified: 2026-06-17

Description

A logic error in the ln utility of uutils coreutils causes the program to reject source paths containing non-UTF-8 filename bytes when using target-directory forms (e.g., ln SOURCE... DIRECTORY). While GNU ln treats filenames as raw bytes and creates the links correctly, the uutils implementation enforces UTF-8 encoding, resulting in a failure to stat the file and a non-zero exit code. In environments where automated scripts or system tasks process valid but non-UTF-8 filenames common on Unix filesystems, this divergence causes the utility to fail, leading to a local denial of service for those specific operations.

Frequently asked questions

What is CVE-2026-35373?: A logic error in the ln utility of uutils coreutils causes the program to reject source paths containing non-UTF-8 filename bytes when using target-directory forms (e.g., ln SOURCE... DIRECTORY). While GNU ln treats filenames as raw bytes and creates the links correctly, the uutils implementation enforces UTF-8 encoding, resulting in a failure to stat the file and a non-zero exit code. In environments where automated scripts or system tasks process valid but non-UTF-8 filenames common on Unix filesystems, this divergence causes the utility to fail, leading to a local denial of service for those specific operations.
How severe is CVE-2026-35373?: CVE-2026-35373 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-35373 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35373?: CVE-2026-35373 affects Uutils Coreutils. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35373?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-35373 have an EU (EUVD) identifier?: Yes. CVE-2026-35373 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25022.
When was CVE-2026-35373 published?: CVE-2026-35373 was published on 2026-04-22 and last updated on 2026-06-17.

References

https://github.com/uutils/coreutils/pull/11403

Affected products (1)

cpe:2.3:a:uutils:coreutils:-:*:*:*:*:rust:*:*

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