CVE-2023-41993

KEVApple Multiple Products WebKit Code Execution Vulnerability

Description

Apple iOS, iPadOS, macOS, and Safari WebKit contain an unspecified 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.

The issue was addressed with improved checks. This issue is fixed in macOS Sonoma 14. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited against versions of iOS before iOS 16.7.

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

PublishedSep 21, 2023

Last modifiedJun 17, 2026

Added to KEVSep 25, 2023

Remediation dueOct 16, 2023

References

security.gentoo.org/glsa/202401-33Third Party Advisory
security.netapp.com/advisory/ntap-20240426-0004/Third Party Advisory
support.apple.com/en-us/HT213940Vendor Advisory
support.apple.com/kb/HT213926Vendor Advisory
support.apple.com/kb/HT213930Vendor Advisory
webkitgtk.org/security/WSA-2023-0009.htmlThird Party Advisory
cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-41993US Government Resource

0 recent articles mention this CVE

Risk assessment · High

Actively exploited. Patch immediately.

Exploitation: Confirmed in the wild (CISA KEV)
Federal remediation deadline: Overdue by 1106 days
CVSS: 8.8 HIGH
EPSS (30-day exploit probability): 24.3% · top 2% of all CVEs
Weakness: CWE-754
Attack vector: Network, remotely reachable

Recommended actions

1.Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
2.Treat as emergency change: patch or isolate internet-facing instances first.
3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.

Assessment is derived automatically from the live signals above; verify against your own asset inventory.