What’s Vulnerable › Vulnerabilities

CVE-2021-28507: An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent.

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-01-14 · updated 2026-06-17
• Weakness: CWE-284

Description

An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent.

Affected products

• Arista Networks EOS: from 4.23.0 through 4.23.9m; from 4.24.0 through 4.24.7m; from 4.25.0 through 4.25.3; from 4.25.4 through 4.25.4m; from 4.25.5 through 4.25.5.1m; from 4.26.0 through 4.26.2f

References

• https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071
• https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071

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