Is CVE-2021-43310 in the CISA KEV catalog?

No. CVE-2021-43310 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-43310?

CVE-2021-43310 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-43310?

CVE-2021-43310 has an EPSS score of 1.70% (74th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-43310?

Upgrade keylime to 6.3.0 or later.

CVE & CISA-KEV Catalog

CVE-2021-43310

CRITICALEPSS 74th pctl

9.8

CVSS v3

NVD

Description

A vulnerability in Keylime before 6.3.0 allows an attacker to craft a request to the agent that resets the U and V keys as if the agent were being re-added to a verifier. This could lead to a remote code execution.

CWE-290

How to fix

Remediation Available

keylimeNVD

Affected:< 6.3.0Fixed in:6.3.0CVE-2021-43310derived 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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.70%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

References

Patch1

seclists.org

Mitigation1

github.com

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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 2025-05-27.