CVE-2025-3456

Protocol password disclosure via cleartext encryption-key logging

Published Aug 25, 2025 · Updated Aug 25, 2025

Sensitive-data logging in Arista EOS allows local users to obtain the global common encryption key from local or remote accounting logs. EOS writes the configured key to accounting records in clear text instead of withholding the sensitive value. Exploitation requires an affected release, a custom global key, access to the logs, and encrypted running-config secrets; together these disclose neighbor-protocol passwords.

CVSS severity3.8
Low
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-data logging in Arista EOS allows local users to obtain the global common encryption key from local or remote accounting logs. EOS writes the configured key to accounting records in clear text instead of withholding the sensitive value. Exploitation requires an affected release, a custom global key, access to the logs, and encrypted running-config secrets; together these disclose neighbor-protocol passwords.

The record

CVE
CVE-2025-3456
Published
Aug 25, 2025
Updated
Aug 25, 2025
Vendor
Arista Networks
Product
Arista EOS
Classifications
CWE-532, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.29.0 <=4.29.10M
  2. Affected versionversion=4.30.0 <=4.30.10M
  3. Affected versionversion=4.31.0 <=4.31.7M
  4. Affected versionversion=4.32.0 <=4.32.5M
  5. Affected versionversion=4.33.0 <=4.33.3F
  6. Affected versionversion=4.34.0F

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Arista Networks · Arista EOSversion=4.29.0 <=4.29.10M; version=4.30.0 <=4.30.10M; version=4.31.0 <=4.31.7M; version=4.32.0 <=4.32.5M; version=4.33.0 <=4.33.3F; version=4.34.0F

Published CVSS scores

3.8Arista NetworksCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552.001Unsecured Credentials: Credentials In Files

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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