Is CVE-2021-28497 in the CISA KEV catalog?

No. CVE-2021-28497 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-28497?

CVE-2021-28497 has a CVSS v3 base score of 4.4 (MEDIUM).

What is the EPSS score for CVE-2021-28497?

CVE-2021-28497 has an EPSS score of 0.23% (14th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-28497?

Upgrade metamako operating system to 0.32.0 or later.

CVE & CISA-KEV Catalog

CVE-2021-28497

MEDIUM

4.4

CVSS v3

NVD

Description

In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, under certain conditions, the bash shell might be accessible to unprivileged users in situations where they should not have access. This issue affects: Arista Metamako Operating System All 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

CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

metamako operating systemNVD

Affected:>= 0.31.0, < 0.32.0Fixed in:0.32.0CVE-2021-28497derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

0.23%probability of exploitation in 30 days

14thpercentile

Low risk: more likely to be exploited than 14% of all known CVEs.

References

Vendor Advisory1

arista.com

Related Vulnerabilities

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2012-1456	Medium	4.3	100%	-	-
CVE-2012-1459	Medium	4.3	100%	-	Fix
CVE-2012-1446	Medium	4.3	100%	-	-
CVE-2012-1443	Medium	4.3	100%	-	-
CVE-2012-1442	Medium	4.3	99%	-	-
CVE-2012-1457	Medium	4.3	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.