CVE-2025-31238Network attack vector

Memory corruption via malformed WebKit content

Published May 12, 2025 · Updated Apr 2, 2026

Memory corruption in WebKit across affected Apple operating systems and Safari allows remote attackers to corrupt memory via crafted web content. Apple has not disclosed the faulty WebKit operation or the checks missing before the corrected releases. Triggering requires processing attacker-controlled web content; the published impact is memory corruption, while no specific code-execution outcome is documented.

CVSS severity7.3
High
EPSS probability0.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Memory corruption in WebKit across affected Apple operating systems and Safari allows remote attackers to corrupt memory via crafted web content. Apple has not disclosed the faulty WebKit operation or the checks missing before the corrected releases. Triggering requires processing attacker-controlled web content; the published impact is memory corruption, while no specific code-execution outcome is documented.

The record

CVE
CVE-2025-31238
Published
May 12, 2025
Updated
Apr 2, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-119, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 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 <18.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <18.5
Apple · visionOSversion=0 <2.5
Apple · Safariversion=0 <18.5
Apple · tvOSversion=0 <18.5
Apple · macOSversion=0 <15.5
Apple · watchOSversion=0 <11.5

Published CVSS scores

7.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1203Exploitation for Client Execution

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo