How severe is CVE-2025-5791?

CVE-2025-5791 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-5791 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-5791?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-5791 have an EU (EUVD) identifier?

Yes. CVE-2025-5791 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16945.

When was CVE-2025-5791 published?

CVE-2025-5791 was published on 2025-06-06 and last updated on 2026-06-17.

CVE-2025-5791

CVE-2025-5791 is a high-severity vulnerability with a CVSS 3.x base score of 7.1. 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-266.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16945
Weakness: CWE-266
Published: 2025-06-06
Last modified: 2026-06-17

Description

A flaw was found in the user's crate for Rust. This vulnerability allows privilege escalation via incorrect group listing when a user or process has fewer than exactly 1024 groups, leading to the erroneous inclusion of the root group in the access list.

Frequently asked questions

What is CVE-2025-5791?: A flaw was found in the user's crate for Rust. This vulnerability allows privilege escalation via incorrect group listing when a user or process has fewer than exactly 1024 groups, leading to the erroneous inclusion of the root group in the access list.
How severe is CVE-2025-5791?: CVE-2025-5791 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-5791 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-5791?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-5791 have an EU (EUVD) identifier?: Yes. CVE-2025-5791 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16945.
When was CVE-2025-5791 published?: CVE-2025-5791 was published on 2025-06-06 and last updated on 2026-06-17.

References

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