An integer overflow was addressed with improved input validation. (CVE-2026-43818)
CVE-2026-43818 is a high-severity integer overflow vulnerability that was addressed by improved input validation. It affects Apple operating systems including iOS, iPadOS, and multiple macOS versions. The flaw could allow arbitrary code execution when processing a maliciously crafted image. The issue is fixed in iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6.
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2026-43818, involves an integer overflow due to insufficient input validation in Apple operating systems. Exploiting this flaw by processing a specially crafted image may lead to arbitrary code execution. The vulnerability is classified under CWE-190 (Integer Overflow or Wraparound) and has a CVSS v3.1 base score of 8.8, indicating high severity. The issue has been addressed by Apple through improved input validation and fixed in the specified OS versions.
Potential Impact
Successful exploitation of this vulnerability can result in arbitrary code execution with no privileges required and low attack complexity, but user interaction is needed. The impact includes full confidentiality, integrity, and availability compromise of the affected system.
Mitigation Recommendations
The vulnerability is fixed in iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. Users and administrators should apply these official updates to remediate the issue. No additional mitigation steps are indicated.
An integer overflow was addressed with improved input validation. (CVE-2026-43818)
Description
CVE-2026-43818 is a high-severity integer overflow vulnerability that was addressed by improved input validation. It affects Apple operating systems including iOS, iPadOS, and multiple macOS versions. The flaw could allow arbitrary code execution when processing a maliciously crafted image. The issue is fixed in iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6.
CVSS v3.1
Score 8.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-43818, involves an integer overflow due to insufficient input validation in Apple operating systems. Exploiting this flaw by processing a specially crafted image may lead to arbitrary code execution. The vulnerability is classified under CWE-190 (Integer Overflow or Wraparound) and has a CVSS v3.1 base score of 8.8, indicating high severity. The issue has been addressed by Apple through improved input validation and fixed in the specified OS versions.
Potential Impact
Successful exploitation of this vulnerability can result in arbitrary code execution with no privileges required and low attack complexity, but user interaction is needed. The impact includes full confidentiality, integrity, and availability compromise of the affected system.
Mitigation Recommendations
The vulnerability is fixed in iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6. Users and administrators should apply these official updates to remediate the issue. No additional mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-v3r2-67q9-p9cr
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-43818"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a83aa79bf8831d539e32463
Added to database: 08/18/2026, 00:42:33 UTC
Last enriched: 08/18/2026, 01:11:05 UTC
Last updated: 08/18/2026, 01:53:01 UTC
Views: 3
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