CVE-2021-47668

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 ImpacttotalSuccessful exploitation gives total 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

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

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

2025-04-17 18:01Z1 YR AGO

Last updated

2026-08-05 08:48Z2 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.2

Document digest

5d9ca20375e0e5f0bc188fc44214e6c30c704dfb3294ff72ff302718ad6a7680

• git.kernel.orghttps://git.kernel.org/stable/c/260925a0b7d2da5449f8ecfd02c1405e0c8a45b8
• git.kernel.orghttps://git.kernel.org/stable/c/bbc6847b9b8978b520f62fbc7c68c54ef0f8d282
• git.kernel.orghttps://git.kernel.org/stable/c/92668d28c7e6a7a2ba07df287669ffcdf650c421
• git.kernel.orghttps://git.kernel.org/stable/c/08ab951787098ae0b6c0364aeea7a8138226f234
• git.kernel.orghttps://git.kernel.org/stable/c/ac48ef15826e83f4206c47add61072e8fc76d328
• git.kernel.orghttps://git.kernel.org/stable/c/593c072b7b3c4d7044416eb039d9ad706bedd67a
• git.kernel.orghttps://git.kernel.org/stable/c/03f16c5075b22c8902d2af739969e878b0879c94