How severe is CVE-2025-8870?

CVE-2025-8870 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over physical access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-8870 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-8870?

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

Does CVE-2025-8870 have an EU (EUVD) identifier?

Yes. CVE-2025-8870 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-197616.

When was CVE-2025-8870 published?

CVE-2025-8870 was published on 2025-11-14 and last updated on 2026-06-17.

CVE-2025-8870

CVE-2025-8870 is a medium-severity vulnerability with a CVSS 3.x base score of 4.9. 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-248.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
CVSS v4: 5.6
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-197616
Weakness: CWE-248
Published: 2025-11-14
Last modified: 2026-06-17

Description

On affected platforms running Arista EOS, certain serial console input might result in an unexpected reload of the device.153

Frequently asked questions

What is CVE-2025-8870?: On affected platforms running Arista EOS, certain serial console input might result in an unexpected reload of the device.153
How severe is CVE-2025-8870?: CVE-2025-8870 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over physical access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-8870 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-8870?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-8870 have an EU (EUVD) identifier?: Yes. CVE-2025-8870 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-197616.
When was CVE-2025-8870 published?: CVE-2025-8870 was published on 2025-11-14 and last updated on 2026-06-17.

References

https://www.arista.com/en/support/advisories-notices/security-advisory/22811-security-advisory-0125

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