CVE-2023-4147

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• 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

0.56% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 44.6% 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

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. 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

2023-08-07 13:19Z3 YR AGO

Last updated

2026-02-25 17:20Z6 MO AGO

Reserved

2023-08-03

Assigning CNA

redhat

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.2

Document digest

514d629cf50407aa6a864b3cb052fd00fbf2298393e5c61b511a3c0fdf330871

• access.redhat.comRHSA-2023:5069https://access.redhat.com/errata/RHSA-2023:5069vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2023:5091https://access.redhat.com/errata/RHSA-2023:5091vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2023:5093https://access.redhat.com/errata/RHSA-2023:5093vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2023:7382https://access.redhat.com/errata/RHSA-2023:7382vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2023:7389https://access.redhat.com/errata/RHSA-2023:7389vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2023:7411https://access.redhat.com/errata/RHSA-2023:7411vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-4147vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2225239https://bugzilla.redhat.com/show_bug.cgi?id=2225239issue-trackingx_refsource_REDHAT
• git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ebc1064e4874d5987722a2ddbc18f94aa53b211
• www.spinics.nethttps://www.spinics.net/lists/stable/msg671573.html
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20231020-0006/
• www.debian.orghttps://www.debian.org/security/2023/dsa-5480
• www.debian.orghttps://www.debian.org/security/2023/dsa-5492