CVE-2023-3866

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

9.64% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 95.1% 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

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

2025-08-16 13:27Z1 YR AGO

Last updated

2026-08-05 09:09Z1 MO AGO

Reserved

2023-07-24

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

db51de003c88c817a43f6685bcd3bfee54e5fdb2625c0b8241dd901f30712988

• git.kernel.orghttps://git.kernel.org/stable/c/eb947403518ea3d93f6d89264bb1f5416bb0c7d0
• git.kernel.orghttps://git.kernel.org/stable/c/854156d12caa9d36de1cf5f084591c7686cc8a9d
• git.kernel.orghttps://git.kernel.org/stable/c/d1066c1b3663401cd23c0d6e60cdae750ce00c0f
• git.kernel.orghttps://git.kernel.org/stable/c/5005bcb4219156f1bf7587b185080ec1da08518e