CVE-2026-43776: Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution in Apple iOS and iPadOS
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, 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.
AI Analysis
Technical Summary
CVE-2026-43776 is a buffer overflow vulnerability in Apple iOS and iPadOS that arises from insufficient bounds checking when processing certain files. Exploiting this flaw by using a maliciously crafted file may lead to unexpected application termination or enable arbitrary code execution. Apple fixed this vulnerability in iOS 26.6 and iPadOS 26.6 by improving bounds checking. The vulnerability is tracked under CWE-120 (Classic Buffer Overflow).
Potential Impact
Successful exploitation can result in high impact outcomes including arbitrary code execution, which compromises confidentiality, integrity, and availability of the affected device. Additionally, it may cause unexpected termination of applications, disrupting normal device operation.
Mitigation Recommendations
A fix is available in iOS 26.6 and iPadOS 26.6. Users and administrators should update affected devices to these versions or later to remediate this vulnerability. Patch status is confirmed by the vendor advisory indicating the issue is fixed in these versions.
CVE-2026-43776: Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution in Apple iOS and iPadOS
Description
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, 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.
CVSS v3.1
Score 7.8high
Affected software
Apple
iOS and iPadOS
Apple
macOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-43776 is a buffer overflow vulnerability in Apple iOS and iPadOS that arises from insufficient bounds checking when processing certain files. Exploiting this flaw by using a maliciously crafted file may lead to unexpected application termination or enable arbitrary code execution. Apple fixed this vulnerability in iOS 26.6 and iPadOS 26.6 by improving bounds checking. The vulnerability is tracked under CWE-120 (Classic Buffer Overflow).
Potential Impact
Successful exploitation can result in high impact outcomes including arbitrary code execution, which compromises confidentiality, integrity, and availability of the affected device. Additionally, it may cause unexpected termination of applications, disrupting normal device operation.
Mitigation Recommendations
A fix is available in iOS 26.6 and iPadOS 26.6. Users and administrators should update affected devices to these versions or later to remediate this vulnerability. Patch status is confirmed by the vendor advisory indicating the issue is fixed in these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:27.818Z
- State
- PUBLISHED
Threat ID: 6a67c1b99c2644c7f8cb1034
Added to database: 07/27/2026, 20:38:17 UTC
Last enriched: 07/30/2026, 00:15:51 UTC
Last updated: 09/11/2026, 22:08:26 UTC
Views: 62
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.