CVE-2025-24257Public exploit

Kernel memory corruption via bitmap-size underflow

Published Mar 31, 2025 · Updated Apr 2, 2026

An out-of-bounds write in IOGPUFamily on Apple operating systems allows local apps to crash the system or write kernel memory. The newResourceGroup method accepts a capacity below 64, causing an unsigned bitmap-mask calculation to underflow and drive out-of-bounds kernel accesses. An installed app must invoke the IOGPU user client; affected releases are iOS and iPadOS before 18.4, macOS before 15.4, visionOS before 2.4, and watchOS before 11.4.

CVSS severity7.1
High
EPSS probability0.26%
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

An out-of-bounds write in IOGPUFamily on Apple operating systems allows local apps to crash the system or write kernel memory. The newResourceGroup method accepts a capacity below 64, causing an unsigned bitmap-mask calculation to underflow and drive out-of-bounds kernel accesses. An installed app must invoke the IOGPU user client; affected releases are iOS and iPadOS before 18.4, macOS before 15.4, visionOS before 2.4, and watchOS before 11.4.

The record

CVE
CVE-2025-24257
Published
Mar 31, 2025
Updated
Apr 2, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-787, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 31, 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 <18.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <18.4
Apple · visionOSversion=0 <2.4
Apple · macOSversion=0 <15.4
Apple · watchOSversion=0 <11.4

Published CVSS scores

7.1CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/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.

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499.004Application or System Exploitation

Public exploit references

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