CVE-2021-47251

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

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 14.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2024-05-21 14:19Z2 YR AGO

Last updated

2026-05-11 13:50Z3 MO AGO

Reserved

2024-04-10

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-1284Improper Validation of Specified Quantity in InputBase
• CWE-99Improper Control of Resource Identifiers ('Resource Injection')Class

Data version

5.2

Document digest

421175e846deba658a0189c769656ab6c33c7873cd2140adeb4e7c6283d4760c

• git.kernel.orghttps://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126
• git.kernel.orghttps://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cb
• git.kernel.orghttps://git.kernel.org/stable/c/e298aa358f0ca658406d524b6639fe389cb6e11e