CVE-2021-4304

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 ImpactpartialSuccessful exploitation gives limited 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

2.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 82.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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

2023-01-05 09:59Z3 YR AGO

Last updated

2025-05-28 13:37Z1 YR AGO

Reserved

2023-01-05

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

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

Weaknesses

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class

Data version

5.1

Document digest

8980b183928b1e3c201bf6f9b2f9af5b67a2d6d9e8b3d0eea511df495a63611b

• vuldb.comhttps://vuldb.com/?id.217447vdb-entrytechnical-description
• vuldb.comhttps://vuldb.com/?ctiid.217447signaturepermissions-required
• github.comhttps://github.com/eprintsug/ulcc-core/commit/811edaae81eb044891594f00062a828f51b22cb1patch