CVE-2021-47166

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

0.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 15.0% 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

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

2024-03-25 09:16Z2 YR AGO

Last updated

2026-05-11 13:49Z3 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-787Out-of-bounds WriteBase
• CWE-99Improper Control of Resource Identifiers ('Resource Injection')Class

Data version

5.2

Document digest

2324af8da8fa5b297454e88abd5616604d053930d2bccd0d5e0efa594c6b94f6

• git.kernel.orghttps://git.kernel.org/stable/c/e8b8418ce14ae66ee55179901edd12191ab06a9e
• git.kernel.orghttps://git.kernel.org/stable/c/b291baae24f876acd5a5dd57d0bb2bbac8a68b0c
• git.kernel.orghttps://git.kernel.org/stable/c/c757c1f1e65d89429db1409429436cf40d47c008
• git.kernel.orghttps://git.kernel.org/stable/c/40f139a6d50c232c0d1fd1c5e65a845c62db0ede
• git.kernel.orghttps://git.kernel.org/stable/c/785917316b25685c9b3a2a88f933139f2de75e33
• git.kernel.orghttps://git.kernel.org/stable/c/7087db95c0a06ab201b8ebfac6a7ec1e34257997
• git.kernel.orghttps://git.kernel.org/stable/c/2fe1cac336b55a1f79e603e9ce3552c3623e90eb
• git.kernel.orghttps://git.kernel.org/stable/c/0d0ea309357dea0d85a82815f02157eb7fcda39f