CVE-2021-47403

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

Ranks above 16.3% of scored records. A rank, not a probability.

NVD base score

7.1 (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: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

2024-05-21 15:03Z2 YR AGO

Last updated

2026-05-11 13:54Z3 MO AGO

Reserved

2024-05-21

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

• CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
• CWE-401Missing Release of Memory after Effective LifetimeVariant

Data version

5.2

Document digest

1940bac9813d3d42cdea0353a5252dd6327531133d168964ab1ca16748d982ff

• git.kernel.orghttps://git.kernel.org/stable/c/31398849b84ebae0d43a1cf379cb9895597f221a
• git.kernel.orghttps://git.kernel.org/stable/c/c0adb5a947dec6cff7050ec56d78ecd3916f9ce6
• git.kernel.orghttps://git.kernel.org/stable/c/dde4c1429b97383689f755ce92b4ed1e84a9c92b
• git.kernel.orghttps://git.kernel.org/stable/c/9c5b77a7ffc983b2429ce158b50497c5d3c86a69
• git.kernel.orghttps://git.kernel.org/stable/c/3253c87e1e5bc0107aab773af2f135ebccf38666
• git.kernel.orghttps://git.kernel.org/stable/c/7cea848678470daadbfdaa6a112b823c290f900c
• git.kernel.orghttps://git.kernel.org/stable/c/811178f296b16af30264def74c8d2179a72d5562
• git.kernel.orghttps://git.kernel.org/stable/c/bb8a4fcb2136508224c596a7e665bdba1d7c3c27