What’s Vulnerable › Vulnerabilities

CVE-2023-24509: On affected modular platforms running Arista EOS equipped with both redundant supervisor modules and having the redundancy protocol configured with RPR or SSO, an existing unprivileged user can login to the standby supervisor as a root user, leading t ...

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-04-13 · updated 2026-06-17
• Weakness: CWE-269

Description

On affected modular platforms running Arista EOS equipped with both redundant supervisor modules and having the redundancy protocol configured with RPR or SSO, an existing unprivileged user can login to the standby supervisor as a root user, leading to a privilege escalation. Valid user credentials are required in order to exploit this vulnerability.

Affected products

• Arista Networks EOS: from 4.23 through 4.23.13m; from 4.24.0 before 4.24.11m; from 4.25.0 before 4.25.10m; from 4.26.0 before 4.26.9m; from 4.27.0 before 4.27.7m; from 4.28.0 before 4.28.4m — fixed in 4.24.11m, 4.25.10m, 4.26.9m, 4.27.7m, 4.28.4m

How to fix

Upgrade to a fixed version: Arista Networks EOS 4.24.11m, 4.25.10m, 4.26.9m, 4.27.7m. Check the vendor advisory for mitigations.

References

• https://www.arista.com/en/support/advisories-notices/security-advisory/16985-security-advisory-0082
• https://www.arista.com/en/support/advisories-notices/security-advisory/16985-security-advisory-0082

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