CVE-2021-47187

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

0.22% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 13.0% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/I:N/A:H

NVD analysis status

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

Red Hat severity

Low. 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

2024-04-10 18:56Z2 YR AGO

Last updated

2026-05-11 13:49Z5 MO AGO

Reserved

2024-03-25

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-1176Inefficient CPU ComputationClass

Data version

5.2

Document digest

2ff4539f7221169b281248e534c4c40ae502f044223759de24ad638dd63f52f7

• git.kernel.orghttps://git.kernel.org/stable/c/a14d7038ea201c5526375becfc43b9ba281b1e82
• git.kernel.orghttps://git.kernel.org/stable/c/e52fecdd0c142b95c720683885b06ee3f0e065c8
• git.kernel.orghttps://git.kernel.org/stable/c/118c826ef8b43efe0fda8faf419673707ee8c5e5
• git.kernel.orghttps://git.kernel.org/stable/c/3f1dcaff642e75c1d2ad03f783fa8a3b1f56dd50