CVE-2025-24158Network attack vector

Denial of service via WebKit memory mishandling

Published Jan 27, 2025 · Updated May 21, 2026

Denial of service in WebKit in affected Apple operating systems and Safari allows remote attackers to interrupt web content processing. The public WebKit record identifies improved memory handling as the fix but does not disclose the faulty allocation, lifetime, or bounds operation. A target must process attacker-controlled web content; successful exploitation interrupts the WebKit process, with no reported confidentiality or integrity impact.

CVSS severity6.5
Medium
EPSS probability1.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in WebKit in affected Apple operating systems and Safari allows remote attackers to interrupt web content processing. The public WebKit record identifies improved memory handling as the fix but does not disclose the faulty allocation, lifetime, or bounds operation. A target must process attacker-controlled web content; successful exploitation interrupts the WebKit process, with no reported confidentiality or integrity impact.

The record

CVE
CVE-2025-24158
Published
Jan 27, 2025
Updated
May 21, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-79, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 27, 2025CVE publishedPublication date reported by the CVE source.
  2. May 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <18.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <18.3
Apple · visionOSversion=0 <2.3
Apple · Safariversion=0 <18.3
Apple · tvOSversion=0 <18.3
Apple · macOSversion=0 <15.3
Apple · watchOSversion=0 <11.3

Published CVSS scores

6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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Your stack

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