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Ios And Ipados CVE-2026-43776

| EUVDEUVD-2026-49446 HIGH
Classic Buffer Overflow (CWE-120)
2026-07-27 apple GHSA-77wc-7xcr-f383
7.8
CVSS 3.1 · Vendor: apple
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Vulnerability Assessment

Weakness
CWE
MITRE ATT&CK

1 technique across 1 tactic: Execution

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

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 27, 2026

Arbitrary code execution via buffer overflow in Apple iOS, iPadOS, and macOS. Processing a maliciously crafted file can

Affected VersionsENISA

iOS and iPadOS 0 <26.6
macOS 0 <15.7.8
macOS 0 <26.6

Affected Packages

euvd ios_and_ipados fix: 26.6
euvd macos fix: 15.7.8, 26.6

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (apple) PRIMARY 7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from Vendor (apple) · only source for this CVE.

CVSS VectorVendor: apple

Attack Vector
Local
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 7.8

DescriptionCVE.org

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6. Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution.

Threat Intelligence Overview

EPSS Score
0.1%
Top 96% exploitable
Social Media
2
Sightings
Data Quality
6 sources
Confidence: High

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
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact· derived
Medium
Technical Impact
Total

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +39
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

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.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

CVE-2026-86950 HIGH POC
8.8 Sep 28

Out-of-bounds write in Apple's iOS, iPadOS, and macOS file-parsing code lets remote attackers achieve arbitrary code exe

CVE-2026-43723 HIGH POC
7.8 Jul 27

Local privilege escalation in Apple operating systems allows a malicious app to gain root privileges. The vulnerability,

CVE-2026-65414 CRITICAL
9.8 Sep 14

An out-of-bounds write (CWE-787) in Apple's operating system family - iOS/iPadOS, macOS (Sequoia, Tahoe, and Golden Gate

CVE-2026-64771 CRITICAL
9.8 Jul 27

Memory corruption in multiple Apple operating systems allows remote attackers to trigger buffer overflows that may cause

CVE-2026-43803 CRITICAL
9.8 Jul 27

Remote system termination in multiple Apple operating systems (iOS, iPadOS, macOS, tvOS, visionOS, watchOS) can be trigg

CVE-2026-43810 CRITICAL
9.8 Jul 27

Remote memory corruption in the Apple operating-system kernel (shared XNU core across iOS/iPadOS 26.6, macOS Sequoia 15.

CVE-2026-64770 CRITICAL
9.8 Jul 27

Remote code execution in Apple operating systems prior to iOS/iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, ma

CVE-2026-64769 CRITICAL
9.8 Jul 27

Heap-based buffer overflow in Apple iOS, iPadOS, macOS, tvOS, and visionOS allows remote attackers to cause unexpected a

CVE-2026-64774 CRITICAL
9.8 Jul 27

We are tasked to produce a JSON object with specific fields based on a CVE. We must synthesize multiple intelligence sou

CVE-2026-64772 CRITICAL
9.8 Jul 27

Remote code execution in Apple operating systems (iOS, iPadOS, macOS Sequoia, macOS Tahoe, tvOS, visionOS) stems from an

CVE-2026-84561 CRITICAL
9.8 Sep 14

Kernel memory corruption in Apple's operating systems lets an app already running on a device trigger a double free (CWE

CVE-2026-84609 CRITICAL
9.8 Sep 14

A locally installed app on Apple iOS/iPadOS (before 27), macOS (before Golden Gate 27, Tahoe 26.7, or Sequoia 15.8), tvO

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