CVE-2021-4299

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

0.93% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 57.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2023-01-02 07:57Z3 YR AGO

Last updated

2024-08-03 17:23Z2 YR AGO

Reserved

2023-01-02

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 4.3)

CNA CVSS vector

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

Weaknesses

• CWE-1333Inefficient Regular Expression ComplexityBase

Data version

5.1

Document digest

c767a52670bf67771a74c923be35e175161e37b8ff5c99df750a9e55b5e3ca64

• vuldb.comhttps://vuldb.com/?id.217180vdb-entrytechnical-description
• vuldb.comhttps://vuldb.com/?ctiid.217180signaturepermissions-required
• github.comhttps://github.com/cronvel/string-kit/commit/9cac4c298ee92c1695b0695951f1488884a7ca73patch
• github.comhttps://github.com/cronvel/string-kit/releases/tag/v0.12.8patch