CVE-2025-24182

Process-memory disclosure via improper CoreText glyph validation

Published Mar 31, 2025 · Updated Apr 2, 2026

An out-of-bounds read in Apple platforms' CoreText allows remote attackers to disclose process memory via a malicious font. CoreText's font-glyph parser fails to validate user-supplied glyph data before reading past the end of an allocated buffer. Exploitation requires the target to visit a malicious page or open a malicious file; the documented standalone consequence is information disclosure, while code execution requires chaining with another flaw.

CVSS severity5.5
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in Apple platforms' CoreText allows remote attackers to disclose process memory via a malicious font. CoreText's font-glyph parser fails to validate user-supplied glyph data before reading past the end of an allocated buffer. Exploitation requires the target to visit a malicious page or open a malicious file; the documented standalone consequence is information disclosure, while code execution requires chaining with another flaw.

The record

CVE
CVE-2025-24182
Published
Mar 31, 2025
Updated
Apr 2, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-125, T1204.002
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

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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=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 · tvOSversion=0 <18.4
Apple · macOSversion=0 <15.4
Apple · watchOSversion=0 <11.4

Published CVSS scores

5.5CISA ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
3.3Trend Micro Zero Day InitiativeCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1204.002Malicious File

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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