CVE-2023-32373

HIGH

8.8

CVSS Score

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

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

8 products affected across 3 vendorsmacOSiPhone OSEnterprise Linux

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Severity

HIGH8.8

Exploitation

CISA KEV

Exploit prediction

EPSS 12%

SSVC

Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score12.2%

EPSS (Exploit Prediction Scoring System) estimates a 12.2% chance this CVE is exploited in the wild within the next 30 days — higher than 96% 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 a use-after-free vulnerability that leads to code execution when processing maliciously crafted web content. 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-2023-32373

Description

A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 9.5, tvOS 16.5, macOS Ventura 13.4, iOS 15.7.6 and iPadOS 15.7.6, Safari 16.5, iOS 16.5 and iPadOS 16.5. Processing maliciously crafted web content may lead to arbitrary code execution. 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 < 15.7.6v < 16.516.0 ≤ v < 16.5

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

Affected range stops below 15.7.6, 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 < 15.7.616.0 ≤ v < 16.5

Affected range stops below 15.7.6, 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 < 13.4

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

Enterprise Linux · Red Hatrpm

95%

6.0 7.0 8.0 9.0

WebKitGTK · Webkitgtk

95%

v < 2.42.3

Affected range stops below 2.42.3, 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 (8)

Third Party Advisory

Source: [email protected]

https://security.gentoo.org/glsa/202401-04

Release NotesVendor Advisory

Source: [email protected]

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

Release NotesVendor Advisory

Source: [email protected]

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

Release NotesVendor Advisory

Source: [email protected]

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

Release NotesVendor Advisory

Source: [email protected]

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

Release NotesVendor Advisory

Source: [email protected]

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

Release NotesVendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT213765

US Government Resource

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

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-32373

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

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

CVSS

8.8HIGHCISA-ADP

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

Vector?

Quick Info

StatusANALYZED

CWE

CWE-416

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