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CVE-2021-28494

HIGH
8.8
CVSS Score
Published: September 9, 2021 at 12:46 PM UTC
Updated: June 17, 2026 at 03:46 AM UTC
2 products affected across 1 vendorMetamako Operating System7130

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Severity
HIGH8.8
Exploit prediction
EPSS 0.9%

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Metamako Operating System· Arista
95%
v ≤ 0.34.0v < MOS-0.35.0
Affected range stops below MOS-0.35.0, so it looks safe — our inference, not a vendor statement
arista-7130 (environment)
7130· Aristadevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCMitigationVendor Advisory
Source: [email protected]
https://www.arista.com/en/support/advisories-notices/security-advisories/12916-security-advisory-68

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-287

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