CVE-2023-40520

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 ImpactpartialSuccessful exploitation gives limited 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

0.28% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 20.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2025-11-04 19:20Z10 MO AGO

Reserved

2023-08-14

Assigning CNA

apple

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

No CWE assigned

Data version

5.2

Document digest

1f42c84f52e6abdf32be5c77776644d2c0afb201a57e005857bee6a5faefbcb2

• support.apple.comhttps://support.apple.com/en-us/HT213938
• support.apple.comhttps://support.apple.com/en-us/HT213936
• support.apple.comhttps://support.apple.com/en-us/HT213937
• seclists.orghttp://seclists.org/fulldisclosure/2023/Oct/10
• seclists.orghttp://seclists.org/fulldisclosure/2023/Oct/8
• seclists.orghttp://seclists.org/fulldisclosure/2023/Oct/9
• support.apple.comhttps://support.apple.com/kb/HT213938
• support.apple.comhttps://support.apple.com/kb/HT213937
• support.apple.comhttps://support.apple.com/kb/HT213936