CVE-2023-32409

HIGH

8.6

CVSS Score

Published: June 23, 2023 at 12:00 AM UTC

Updated: June 17, 2026 at 05:58 AM UTC

6 products affected across 1 vendormacOSiPhone OSiPadOS

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Severity

HIGH8.6

Exploitation

CISA KEV

Exploit prediction

EPSS 17%

SSVC

Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score16.5%

EPSS (Exploit Prediction Scoring System) estimates a 16.5% chance this CVE is exploited in the wild within the next 30 days — higher than 97% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Apple iOS, iPadOS, macOS, tvOS, watchOS, and Safari WebKit contain an unspecified vulnerability that can allow a remote attacker to break out of the Web Content sandbox. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

Required Action

Apply updates per vendor instructions.

Ransomware Use

Unknown

Added to KEV

May 22, 2023

Remediation Due

Jun 12, 2023

1235 days overdue

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPadOS · Apple

95%

v < 15.7v < 16.515.0 ≤ v < 15.7.816.0 ≤ v < 16.5

Affected range stops below 15.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 15.7.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.5, so it looks safe — our inference, not a vendor statement

iPhone OS · Apple

95%

15.0 ≤ v < 15.7.816.0 ≤ v < 16.5

Affected range stops below 15.7.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 16.5, so it looks safe — our inference, not a vendor statement

macOS · Apple

95%

v < 13.413.0 ≤ v < 13.4

Affected range stops below 13.4, so it looks safe — our inference, not a vendor statement

Safari · Apple

95%

v < 16.5

Affected range stops below 16.5, so it looks safe — our inference, not a vendor statement

tvOS · Apple

95%

v < 16.5

Affected range stops below 16.5, so it looks safe — our inference, not a vendor statement

watchOS · Apple

95%

v < 9.5

Affected range stops below 9.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (7)

Vendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT213757

Vendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT213758

Vendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT213761

Vendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT213762

Vendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT213764

Vendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT213842

US Government Resource

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-32409

SSVC — Action Prioritization

SSVCActiveAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.6HIGHCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: CHANGED
Confidentiality: NONE
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

NVD-CWE-noinfo

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