How severe is CVE-2025-8421?

CVE-2025-8421 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2025-8421 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.

How do I fix CVE-2025-8421?

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

Does CVE-2025-8421 have an EU (EUVD) identifier?

Yes. CVE-2025-8421 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-131934.

When was CVE-2025-8421 published?

CVE-2025-8421 was published on 2025-11-12 and last updated on 2026-06-17.

CVE-2025-8421

CVE-2025-8421 is a medium-severity vulnerability with a CVSS 3.x base score of 6.6. 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-276.

Key facts

Severity: Medium (CVSS 3.x base score 6.6)
CVSS v4: 5.2
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-131934
Weakness: CWE-276
Published: 2025-11-12
Last modified: 2026-06-17

Description

An improper default permission vulnerability was reported in Lenovo Dock Manager that, under certain conditions during installation, could allow an authenticated local user to redirect log files with elevated privileges.

Frequently asked questions

What is CVE-2025-8421?: An improper default permission vulnerability was reported in Lenovo Dock Manager that, under certain conditions during installation, could allow an authenticated local user to redirect log files with elevated privileges.
How severe is CVE-2025-8421?: CVE-2025-8421 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2025-8421 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.
How do I fix CVE-2025-8421?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-8421 have an EU (EUVD) identifier?: Yes. CVE-2025-8421 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-131934.
When was CVE-2025-8421 published?: CVE-2025-8421 was published on 2025-11-12 and last updated on 2026-06-17.

References

https://support.lenovo.com/us/en/product_security/LEN-198729

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