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CVE-2025-8870VulnerabilityPublished

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

Source GCVE Database

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Authoritative record:CVE-2025-8870· Medium 4.9

Not known to be exploited · CVSS 4.9 Medium.

Data as of 13 Nov 2026, 18:55 UTC

CVSS 3.1 base score
4.9Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Arista)CVSS 3.14.9
CNA (Arista)CVSS 4.05.6
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Nov 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

AI-suggested

Until a fix is available, restrict access to the serial console to trusted personnel and monitor for unusual console activity.

Description

Certain serial console inputs on affected Arista EOS platforms can cause an unexpected device reload, leading to denial of service. This vulnerability does not impact confidentiality or integrity but affects availability.

References

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