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01 Record

CVE-2021-28499

In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, user account passwords set in clear text could leak to users without any password. This issue affects:

MediumPUBLISHEDCNA: Arista
CNA base score6.3 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

02 Description

In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, user account passwords set in clear text could leak to users without any password. This issue affects:

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.20% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 10.3% of scored records. A rank, not a probability.
NVD base score
5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-09-09 12:38Z5 YR AGO
Last updated
2024-08-03 21:47Z2 YR AGO
Reserved
2021-03-16
Assigning CNA
Arista
Record state
PUBLISHED
Severity
Medium (CVSS 6.3)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Weaknesses
Data version
5.1
Document digest
b67c1e5270305dcf771dce4e6fd0241fa9505d2d6c40dda2ea934b2e08d34a0c

05 Affected products

VendorProductVersionsPlatforms
AristaMetamako Operating SystemMOS-0.18 to < MOS-0.18*, MOS-0.32.0 to < MOS-0.32.0Arista 7130 Systems running MOS

06 References

07 Remediation

Upgrade to MOS-0.32.0

Install hotfix stored at https://www.arista.com/assets/data/SecurityAdvisories/SA64-67/SecurityAdvisory64-67-Hotfix-mos-1818-2.0.0-1.11.core2_64.rpm For detailed information about hotfix installation, please see the advisory https://www.arista.com/en/support/advisories-notices/security-advisories/12912-security-advisory-64