How severe is CVE-2023-32409?

CVE-2023-32409 has a CVSS 3.1 base score of 8.6 (HIGH). EPSS estimates a 16.5% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2023-32409: Apple Multiple Products WebKit Sandbox Escape

CISA Known Exploited Vulnerabilities

Apple Multiple Products WebKit Sandbox Escape Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2023-05-22

Remediation due

2023-06-12

Required action
Apply updates per vendor instructions.

CISA notes
https://support.apple.com/HT213757, https://support.apple.com/HT213758, https://support.apple.com/HT213761, https://support.apple.com/HT213762, https://support.apple.com/HT213764, https://support.apple.com/HT213765; https://nvd.nist.gov/vuln/detail/CVE-2023-32409

Description

The issue was addressed with improved bounds checks. This issue is fixed in watchOS 9.5, tvOS 16.5, macOS Ventura 13.4, iOS 15.7.8 and iPadOS 15.7.8, Safari 16.5, iOS 16.5 and iPadOS 16.5. A remote attacker may be able to break out of Web Content sandbox. Apple is aware of a report that this issue may have been actively exploited.

Severity

CVSS 3.1 · CISA8.6 HIGH

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

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impactpartial

Exploitation Context

as of October 15, 2026

All KEV statistics→

CISA added CVE-2023-32409 to the KEV catalog 32 days before its CVE record was published. The median for entries added in 2023 is 12 days.
It is one of 95 Apple entries in the CISA KEV catalog, and one of 21 added in 2023.
Its current EPSS score (16.5%) is higher than that of 32% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Apple	Apple macOS	unspecified to <13.4
Apple	Apple Safari	unspecified to <16.5
Apple	Apple watchOS	unspecified to <9.5
Apple	Apple iOS and iPadOS	unspecified to <15.7
Apple	Apple iOS and iPadOS	unspecified to <16.5
Apple	Apple tvOS	unspecified to <16.5

References

6 Links

Other references

Record Details

Published

2023-06-23

Last updated

2026-01-12

Assigner (CNA)

apple

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.