CVE-2021-28494

8.8 highEPSS 0.9%

High (8.8) in arista metamako operating system. EPSS 0.9% chance of exploitation in the next 30 days.

In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, under certain conditions, authentication is bypassed by unprivileged users who are accessing the Web UI. This issue affects: Arista Metamako Operating System MOS-0.34.0 and prior releases

Severity

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 58% of CVEs (scores of 2026-10-31)
CWE: CWE-287
Published: 2021-09-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

arista:metamako_operating_system

References

https://www.arista.com/en/support/advisories-notices/security-advisories/12916-security-advisory-68
https://www.arista.com/en/support/advisories-notices/security-advisories/12916-security-advisory-68

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