Skip to main content
VulnerabilityPublished Updated

CVE-2025-3456: Arista Networks EOS · Sensitive Data in Logs

Affects Arista Networks EOSSource CVE Database V5

0

Not known to be exploited · CVSS 3.8 Low.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
3.8Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Aug 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Arista NetworksEOSAffected
  • >=4.33.0 <=4.33.3F
  • >=4.32.0 <=4.32.5M
  • >=4.31.0 <=4.31.7M
  • >=4.30.0 <=4.30.10M
  • >=4.29.0 <=4.29.10M
  • =4.34.0F
Fixed in–

AI-suggested

Until an official fix is available, restrict access to device logs and running configurations to trusted personnel only to prevent exposure of sensitive encryption keys. Monitor for vendor updates regarding patches or configuration changes that prevent logging of sensitive information.

Description

CVE-2025-3456 is a vulnerability in Arista Networks EOS where the global common encryption key configuration may be logged in clear text in local or remote accounting logs. This exposure could allow an attacker with access to these logs and the device running-config to derive protocol-specific passwords used for symmetric authentication between neighbor devices. The vulnerability affects multiple versions of EOS from 4.29.0 through 4.34.0F. The CVSS score is 3.8, indicating a low severity impact primarily on confidentiality.

References

Community reviews

Loading reviews…