ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2025-6188

On affected platforms running Arista EOS, maliciously formed UDP packets with source port 3503 may be accepted by EOS.

Published Aug 25, 2025 · catalog updated Aug 27, 2025 · 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-2025-6188. EPSS is 0.42%. 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

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.42%
Remediation
Advisory link
Affected products
vendor Arista Networks EOS 4.32.4.0 ≤4.32.4.1M

On affected platforms running Arista EOS, maliciously formed UDP packets with source port 3503 may be accepted by EOS. UDP Port 3503 is associated with LspPing Echo Reply. This can result in unexpected behaviors, especially for UDP based services that do not perform some form of authentication.

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 4.32.4.0 ≤4.32.4.1M4.32.4.0 ≤4.32.4.1M

How to fix CVE-2025-6188

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-2025-6188. EPSS is 0.42%. 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 4.32.4.0 ≤4.32.4.1M 4.32.4.0 ≤4.32.4.1M. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.42%. 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.

  1. Aug 25, 2025 · EUVD

    Detected

    On affected platforms running Arista EOS, maliciously formed UDP packets with source port 3503 may be accepted by EOS. UDP Port 3503 is associated with LspPing Echo Reply. This can result in unexpected behaviors, especially for UDP based services that do not perform some form of authentication.

  2. Aug 27, 2025 · EUVD

    Updated

    On affected platforms running Arista EOS, maliciously formed UDP packets with source port 3503 may be accepted by EOS. UDP Port 3503 is associated with LspPing Echo Reply. This can result in unexpected behaviors, especially for UDP based services that do not perform some form of authentication.

Sources

  • CVE.orgVulnerability recordCVE-2025-6188

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-6188

    30-day exploitation probability 0.42%

    first.org
  • EUVDVulnerability recordEUVD-2025-25829

    On affected platforms running Arista EOS, maliciously formed UDP packets with source port 3503 may be accepted by EOS. UDP Port 3503 is associated with LspPing Echo Reply. This can result in unexpected behaviors, especially for UDP based services that do not perform some form of

    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 22, 2026
  • EUVDOct 22, 2026