EUVD-2026-78102
GHSA-mw78-7w7q-c746
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, read limits
MITRE ATT&CK
1 technique across 1 tactic: Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
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Alert meAnalysisAIv1 – Sep 15, 2026
An out-of-bounds read in Apple's font parsing code lets a maliciously crafted font file leak process memory on unpatched builds of iOS, iPadOS, macOS, tvOS, visionOS and watchOS, with all affected platforms fixed in the version 27 releases. Triggering it requires the victim to render attacker-supplied content containing the crafted font — an email, document, web page or message preview — but no credentials or elevated privileges are needed once that interaction happens, and the resulting confidentiality impact is rated high with no integrity or availability effect. No public exploit code or active exploitation has been identified, and EPSS sits at a low 0.20% (10th percentile), so this is best handled as a scheduled platform update rather than an emergency response.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 5 packages in euvd
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Primary rating from Vendor (apple) · only source for this CVE.
CVSS VectorVendor: apple
Lifecycle Timeline
4DescriptionCVE.org
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27. Processing a maliciously crafted font may result in the disclosure of process memory.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
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WebKit memory corruption in Safari 18.6 and multiple Apple platforms allows remote code execution when processing malici
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An issue was discovered in certain Apple products. Rated high severity (CVSS 7.8), this vulnerability is low attack comp
Apple kernel lock state checking flaw allows a malicious application to cause unexpected changes in memory shared betwee
An issue was discovered in certain Apple products. Rated high severity (CVSS 7.8), this vulnerability is no authenticati
Apple kernel memory corruption in multiple operating systems allows a malicious application to cause unexpected system t
Out-of-bounds write (CWE-787) in QtWebEngine before 6.10.1-r2 on Alpine Linux, and in other Chromium-based engines such
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On Broadcom BCM4355C0 Wi-Fi chips 9.44.78.27.0.1.56 and other chips, an attacker can craft a malformed RRM neighbor repo
Exploit-DB