CVE-2021-27129

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

0.61% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 47.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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.

Published

2021-04-15 11:15Z5 YR AGO

Last updated

2025-11-11 17:37Z9 MO AGO

Reserved

2021-02-10

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.2

Document digest

d46c14d67689c5c0d3a84aed40dc46c44fe9f75ee44c5b0ee9ddc0506a2b7a5a

• packetstormsecurity.comhttps://packetstormsecurity.com/files/161080/CASAP-Automated-Enrollment-System-1.0-Cross-Site-Scripting.html
• www.exploit-db.comhttps://www.exploit-db.com/exploits/49470