CVE-2021-28495

Published: Sep 9, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-287

7.2HIGH

NVD MITRE

Description

In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, under certain conditions, user authentication can be bypassed when API access is enabled via the JSON-RPC APIs. This issue affects: Arista Metamako Operating System All releases in the MOS-0.1x train MOS-0.13 and post releases in the MOS-0.1x train MOS-0.26.6 and below releases in the MOS-0.2x train MOS-0.31.1 and below releases in the MOS-0.3x train

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:CScope

Changed

Impact

C:NConfidentiality

None

I:LIntegrity

Low

A:LAvailability

Low

Open in CVSS calculator →

Weaknesses

CWE-287

Affected Products

Arista

commercial·US

Metamako Operating System

Networking Infrastructure

and 1 more affected products View all →

Exploitability

Official Patch Available

Workaround Available

Is your org exposed to CVE-2021-28495?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques

Initial Access

View detailed technique mapping

References

https://www.arista.com/en/support/advisories-notices/security-advisories/12914-security-advisory-66

arista.com

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2021-28495 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows