CVE-2023-41993

HIGH
8.8
CVSS Score
Published: September 21, 2023 at 06:23 PM UTC
Updated: June 17, 2026 at 06:23 AM UTC
14 products affected across 6 vendorsmacOSDebian LinuxFedora

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Severity
HIGH8.8
Exploitation
CISA KEV
Exploit prediction
EPSS 24%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score24.3%

EPSS (Exploit Prediction Scoring System) estimates a 24.3% chance this CVE is exploited in the wild within the next 30 days — higher than 98% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

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.

Required Action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Ransomware Use
Unknown
Added to KEV
Sep 25, 2023
Remediation Due
Oct 16, 2023
1111 days overdue

Description

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.

Affected

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

v < 17.0.1
Affected range stops below 17.0.1, so it looks safe — our inference, not a vendor statement
v < 17.0.1
Affected range stops below 17.0.1, so it looks safe — our inference, not a vendor statement
v < 14v < 14.0
Affected range stops below 14, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.0, so it looks safe — our inference, not a vendor statement
All versions

Remediation

No guide yet

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

References (7)

Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
https://webkitgtk.org/security/WSA-2023-0009.html
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
https://support.apple.com/kb/HT213926
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
https://support.apple.com/kb/HT213930
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-41993

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-754

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