CVE-2023-41993Known exploitationPublic exploitNetwork attack vector

Code execution via insufficient web-content checks

Published Sep 21, 2023 · Updated Nov 4, 2025

Code execution in WebKit in Apple iOS, iPadOS, macOS, and Safari allows remote attackers to run code via crafted web content. Apple has disclosed only that WebKit performed insufficient checks while processing the content; the specific code path and failed validation remain undisclosed. Exploitation requires a user or application to process attacker-controlled web content, and observed attacks targeted iOS before 16.7.

CVSS severity8.8
High
EPSS probability29.18%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in WebKit in Apple iOS, iPadOS, macOS, and Safari allows remote attackers to run code via crafted web content. Apple has disclosed only that WebKit performed insufficient checks while processing the content; the specific code path and failed validation remain undisclosed. Exploitation requires a user or application to process attacker-controlled web content, and observed attacks targeted iOS before 16.7.

The record

CVE
CVE-2023-41993
Published
Sep 21, 2023
Updated
Nov 4, 2025
Vendor
Debian
Product
Debian GNU/Linux
Classifications
CWE-754, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.0
  2. Affected versionversion=12.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Debian · Debian GNU/Linuxversion=11.0; version=12.0
Apple · iOSversion=0 <17.0.1
NetApp · OnCommand Workflow Automationversion=0 <=*
Oracle · Java Development Kit (JDK)version=1.8.0
Fedora Project · Fedora Linuxversion=37; version=38; version=39
Oracle · Java Runtime Environment (JRE)version=1.8.0
NetApp · Cloud Insights Storage Workload Security Agentversion=0 <=*
NetApp · Cloud Insights Acquisition Unitversion=0 <=*
NetApp · OnCommand Insightversion=0 <=*
Oracle · Oracle GraalVM for JDKversion=20.3.13; version=21.3.9
Apple · macOSversion=0 <14.0; version=unspecified <14
Apple · iPadOSversion=0 <17.0.1

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.5NetAppCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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