How severe is CVE-2026-35357?

CVE-2026-35357 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-35357 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-2026-35357?

CVE-2026-35357 affects Uutils Coreutils. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35357?

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

Does CVE-2026-35357 have an EU (EUVD) identifier?

Yes. CVE-2026-35357 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24996.

When was CVE-2026-35357 published?

CVE-2026-35357 was published on 2026-04-22 and last updated on 2026-06-17.

CVE-2026-35357

CVE-2026-35357 is a medium-severity vulnerability in Uutils Coreutils with a CVSS 3.x base score of 4.7. 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 4.7)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-24996
Weakness: CWE-367
Affected product: Uutils Coreutils
Published: 2026-04-22
Last modified: 2026-06-17

Description

The cp utility in uutils coreutils is vulnerable to an information disclosure race condition. Destination files are initially created with umask-derived permissions (e.g., 0644) before being restricted to their final mode (e.g., 0600) later in the process. A local attacker can race to open the file during this window; once obtained, the file descriptor remains valid and readable even after the permissions are tightened, exposing sensitive or private file contents.

Frequently asked questions

What is CVE-2026-35357?: The cp utility in uutils coreutils is vulnerable to an information disclosure race condition. Destination files are initially created with umask-derived permissions (e.g., 0644) before being restricted to their final mode (e.g., 0600) later in the process. A local attacker can race to open the file during this window; once obtained, the file descriptor remains valid and readable even after the permissions are tightened, exposing sensitive or private file contents.
How severe is CVE-2026-35357?: CVE-2026-35357 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-35357 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-2026-35357?: CVE-2026-35357 affects Uutils Coreutils. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35357?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-35357 have an EU (EUVD) identifier?: Yes. CVE-2026-35357 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24996.
When was CVE-2026-35357 published?: CVE-2026-35357 was published on 2026-04-22 and last updated on 2026-06-17.

References

https://github.com/uutils/coreutils/issues/10011

Affected products (1)

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

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