CVE-2021-21633

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.77% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 55.3% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

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.

Published

2021-03-30 11:10Z5 YR AGO

Last updated

2024-11-19 16:10Z1 YR AGO

Reserved

2021-01-04

Assigning CNA

jenkins

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-352Cross-Site Request Forgery (CSRF)Compound

Data version

5.1

Document digest

32168789b9299946da26d41af6249146da81aa76cc21359cbd72257f8c456619

• www.jenkins.iohttps://www.jenkins.io/security/advisory/2021-03-30/#SECURITY-2250x_refsource_CONFIRM
• www.openwall.com[oss-security] 20210330 Multiple vulnerabilities in Jenkins pluginshttp://www.openwall.com/lists/oss-security/2021/03/30/1mailing-listx_refsource_MLIST