How severe is CVE-2025-6979?

CVE-2025-6979 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-6979 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-6979?

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-2025-6979 have an EU (EUVD) identifier?

Yes. CVE-2025-6979 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35728.

When was CVE-2025-6979 published?

CVE-2025-6979 was published on 2025-10-23 and last updated on 2026-06-17.

CVE-2025-6979

CVE-2025-6979 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. 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-287.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-35728
Weakness: CWE-287
Published: 2025-10-23
Last modified: 2026-06-17

Description

Captive Portal can allow authentication bypass

Frequently asked questions

What is CVE-2025-6979?: Captive Portal can allow authentication bypass
How severe is CVE-2025-6979?: CVE-2025-6979 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-6979 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-6979?: 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-2025-6979 have an EU (EUVD) identifier?: Yes. CVE-2025-6979 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35728.
When was CVE-2025-6979 published?: CVE-2025-6979 was published on 2025-10-23 and last updated on 2026-06-17.

References

https://https://www.arista.com/en/support/advisories-notices/security-advisory/22535-security-advisory-0123

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