High severity · published Sep 9, 2021
CVE-2021-28494
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…
8.8
CVSS
0.9%
EPSS
No
On KEV
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
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
Metamako Operating System · Arista
through 0.34.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-28494
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-28494
Mitigation
https://www.arista.com/en/support/advisories-notices/security-advisories/12916-security-advisory-68
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