Is CVE-2021-21615 in the CISA KEV catalog?

No. CVE-2021-21615 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-21615?

CVE-2021-21615 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-21615?

CVE-2021-21615 has an EPSS score of 0.90% (55th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-21615?

Upgrade jenkins to 2.263.3 or later.

CVE & CISA-KEV Catalog

CVE-2021-21615

MEDIUM

5.3

CVSS v3

NVD

Description

Jenkins 2.275 and LTS 2.263.2 allows reading arbitrary files using the file browser for workspaces and archived artifacts due to a time-of-check to time-of-use (TOCTOU) race condition.

CWE-367TOCTOU Race Condition

How to fix

Remediation Available

jenkinsNVD

Affected:< 2.263.3Fixed in:2.263.3CVE-2021-21615derived from NVD

Affected:< 2.276Fixed in:2.276CVE-2021-21615derived 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 ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.90%probability of exploitation in 30 days

55thpercentile

Moderate risk: more likely to be exploited than 55% of all known CVEs.

References

Vendor Advisory1

jenkins.io

Third-Party Advisory1

openwall.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 2024-11-21.