CVE-2025-3456: Arista Networks EOS · Sensitive Data in Logs
Affects Arista Networks EOSSource CVE Database V5
Not known to be exploited · CVSS 3.8 Low.
Data as of 26 Oct 2026, 14:05 UTC
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 25 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Arista NetworksEOS | Affected
| 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.