CVE-2023-39434

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

1.51% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 72.7% 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:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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

2023-09-26 20:14Z2 YR AGO

Last updated

2025-05-02 17:46Z1 YR AGO

Reserved

2023-09-14

Assigning CNA

apple

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.1

Document digest

a62a71769d4bd6987bd39f110738c103e9265944a8451a53d0e4cbd1673e0afb

• support.apple.comhttps://support.apple.com/en-us/HT213938
• support.apple.comhttps://support.apple.com/en-us/HT213940
• support.apple.comhttps://support.apple.com/en-us/HT213937
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2023/09/28/3
• seclists.orghttp://seclists.org/fulldisclosure/2023/Oct/8
• seclists.orghttp://seclists.org/fulldisclosure/2023/Oct/9
• seclists.orghttp://seclists.org/fulldisclosure/2023/Oct/3
• security.gentoo.orghttps://security.gentoo.org/glsa/202401-33
• webkitgtk.orghttps://webkitgtk.org/security/WSA-2023-0009.html