CVE-2021-47549

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

Equal to or higher than the score of 14.3% 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

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

2024-05-24 15:09Z2 YR AGO

Last updated

2026-05-11 13:56Z5 MO AGO

Reserved

2024-05-24

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

0a46797173a4653d2607972127e1fc0ac3c7a1c2a12a3a427debb641198707d2

• git.kernel.orghttps://git.kernel.org/stable/c/cdcd80292106df5cda325426e96495503e41f947
• git.kernel.orghttps://git.kernel.org/stable/c/91ba94d3f7afca195b224f77a72044fbde1389ce
• git.kernel.orghttps://git.kernel.org/stable/c/325ea49fc43cbc03a5e1e37de8f0ca6357ced4b1
• git.kernel.orghttps://git.kernel.org/stable/c/0769449b0a5eabc3545337217ae690e46673e73a
• git.kernel.orghttps://git.kernel.org/stable/c/77393806c76b6b44f1c44bd957788c8bd9152c45
• git.kernel.orghttps://git.kernel.org/stable/c/4a46b2f5dce02539e88a300800812bd24a45e097
• git.kernel.orghttps://git.kernel.org/stable/c/adf098e2a8a1e1fc075d6a5ba2edd13cf7189082
• git.kernel.orghttps://git.kernel.org/stable/c/6c8ad7e8cf29eb55836e7a0215f967746ab2b504