CVE-2021-4245

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

1.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 67.7% 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

2022-12-15 00:00Z3 YR AGO

Last updated

2024-08-03 17:23Z2 YR AGO

Reserved

2022-12-15

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

• CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')Class
• CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')Variant

Data version

5.1

Document digest

4088494adc52504279816349f9dd4897872cde29c2ce40637a7bbaad066f12f9

• github.comhttps://github.com/chbrown/rfc6902/pull/76
• github.comhttps://github.com/chbrown/rfc6902/commit/c006ce9faa43d31edb34924f1df7b79c137096cf
• vuldb.comhttps://vuldb.com/?id.215883