CVE-2021-47063

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

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 16.9% 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

2024-02-29 22:37Z2 YR AGO

Last updated

2026-05-11 13:47Z5 MO AGO

Reserved

2024-02-29

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.2

Document digest

fb1c2ab1d8d204c3f21a43426ce9ae93ecfa2b5e76ffc623929f95cf850dd340

• git.kernel.orghttps://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2
• git.kernel.orghttps://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1
• git.kernel.orghttps://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327
• git.kernel.orghttps://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0