Vulnerability · CVE-2025-3456
On affected platforms running Arista EOS, the global common encryption key configuration may be logged in clear text, in local or remote accounting logs.
Published Aug 25, 2025 · catalog updated Oct 12, 2026 · Arista Networks EOS
Last checked Oct 26, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-3456. EPSS is 0.10%. Act only if a listed version of Arista Networks EOS is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2025-8870 · Medium
- CVE-2025-6188 · High
- CVE-2025-2826 · Low
- CVE-2025-2796 · Medium
- CVE-2024-11185 · Medium
- Severity
- Low3.8
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.10%
- Remediation
- Advisory link
- Affected products
- vendor Arista Networks EOS 4.29.0 ≤4.29.10M
On affected platforms running Arista EOS, the global common encryption key configuration may be logged in clear text, in local or remote accounting logs. Knowledge of both the encryption key and protocol specific encrypted secrets from the device running-config could then be used to obtain protocol specific passwords in cases where symmetric passwords are required between devices with neighbor protocol relationships.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Arista Networks EOS 4.29.0 ≤4.29.10M4.29.0 ≤4.29.10M
How to fix CVE-2025-3456
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
Seen in 4.29.0 ≤4.29.10M
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-3456. EPSS is 0.10%. Act only if a listed version of Arista Networks EOS is installed.
Which versions are affected?
Compare what you have installed with Arista Networks EOS 4.29.0 ≤4.29.10M 4.29.0 ≤4.29.10M. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.10%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Aug 25, 2025 · EUVD
Detected
On affected platforms running Arista EOS, the global common encryption key configuration may be logged in clear text, in local or remote accounting logs. Knowledge of both the encryption key and protocol specific encrypted secrets from the device running-config could then be used to obtain protocol specific passwords in cases where symmetric passwords are required between devices with neighbor pro
Oct 12, 2026 · EUVD
Updated
On affected platforms running Arista EOS, the global common encryption key configuration may be logged in clear text, in local or remote accounting logs. Knowledge of both the encryption key and protocol specific encrypted secrets from the device running-config could then be used to obtain protocol specific passwords in cases where symmetric passwords are required between devices with neighbor pro
Sources
- CVE.orgVulnerability recordCVE-2025-3456
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-3456
30-day exploitation probability 0.10%
first.org - EUVDVulnerability recordEUVD-2025-25755
On affected platforms running Arista EOS, the global common encryption key configuration may be logged in clear text, in local or remote accounting logs. Knowledge of both the encryption key and protocol specific encrypted secrets from the device running-config could then be used
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Oct 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSOct 23, 2026
- CVE.orgOct 21, 2026
- EUVDOct 21, 2026