CVE-2023-4387

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

0.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 15.8% 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

Modified. 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

2023-08-16 18:49Z3 YR AGO

Last updated

2025-11-06 19:44Z10 MO AGO

Reserved

2023-08-16

Assigning CNA

redhat

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-416Use After FreeVariant

Data version

5.2

Document digest

271776c4b80515f4979b6bb66243365f455290565fd433ad232c5b8c1192fecc

• access.redhat.comRHSA-2022:7683https://access.redhat.com/errata/RHSA-2022:7683vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2022:8267https://access.redhat.com/errata/RHSA-2022:8267vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-4387vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2219270https://bugzilla.redhat.com/show_bug.cgi?id=2219270issue-trackingx_refsource_REDHAT
• github.comhttps://github.com/torvalds/linux/commit/9e7fef9521e73ca8afd7da9e58c14654b02dfad8