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Visionos CVE-2026-64783

| EUVDEUVD-2026-49451 HIGH
Use After Free (CWE-416)
2026-07-27 apple GHSA-v4g2-v8g7-xcrm
Denial Of Service Use After Free Memory Corruption Apple Red Hat Visionos Watchos Ios And Ipados Suse
8.8
CVSS 3.1 · Vendor: apple
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Vulnerability Assessment

Weakness
CWE
CWE-416
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 28, 2026

Use-after-free vulnerability in Safari’s web content processing allows remote attackers to execute arbitrary code on affected Apple devices when a user visits a malicious website. Affected versions include Safari prior to 26.6, iOS and iPadOS prior to 26.6, macOS Tahoe prior to 26.6, visionOS prior to 26.6, and watchOS prior to 26.6. No public exploit or active exploitation has been identified, and EPSS indicates a low probability of exploitation (0.13%).

Affected VersionsENISA

Safari 0 <26.6
macOS 0 <26.6
visionOS 0 <26.6
watchOS 0 <26.6
iOS and iPadOS 0 <26.6

Affected Packages

euvd ios_and_ipados fix: 26.6
euvd macos fix: 26.6
euvd safari fix: 26.6
euvd visionos fix: 26.6
euvd watchos fix: 26.6

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

Vendor (apple) PRIMARY 8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SUSE 6.5 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Red Hat 8.8 HIGH

Primary rating from Vendor (apple).

CVSS VectorVendor: apple

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Patch available
Jul 27, 2026 - 21:17 EUVD
CVE Published
Jul 27, 2026 - 20:14 cve.org
UNKNOWN (no severity yet)
CVE Published
Jul 27, 2026 - 20:14 cve.org
HIGH 8.8

DescriptionCVE.org

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Threat Intelligence Overview

EPSS Score
0.1%
Top 97% exploitable
Social Media
1
Sightings
Data Quality
5 sources
Confidence: Medium
EUVD NVD CVE.org EPSS Vulnrichment Vendor CIRCL VulDB

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.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.1%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Total

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Use After Free HIGH

Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.

Memory Corruption HIGH

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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Same weakness CWE-416 – Use After Free

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Same technique Denial Of Service

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CVE-2011-2462 CRITICAL POC
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CVE-2011-0611 HIGH POC
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CVE-2012-1889 HIGH POC
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CVE-2014-1761 HIGH POC
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CVE-2011-0609 HIGH POC
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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Affected
SUSE Linux Enterprise Module for Development Tools 15 SP7 Affected

References

Advisories & patches
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-64783 ADVISORY https://seclists.org/oss-sec/2026/q3/521 ADVISORY https://vuldb.com/vuln/383780 REF https://support.apple.com/en-us/128066 REF https://support.apple.com/en-us/128067 REF https://support.apple.com/en-us/128068 REF https://support.apple.com/en-us/128070 REF https://support.apple.com/en-us/128073

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