Apple Multiple Products Out-of-Bounds Write Vulnerability
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.11 and iPadOS 18.7.11, iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1. Processing a maliciously crafted file…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)29 Sept 2026
- Exploited in EUVD (ENISA)29 Sept 2026
- Used by ransomwareno
- EPSS above 10 %26.2%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.11 and iPadOS 18.7.11, iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1. Processing a maliciously crafted file may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 27.
Affected products
- 0 <18.7.11
- 0 <15.8.1
- 0 <26.7.1
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
-
EPSS peak: 26.2%
References
Other exploited vulnerabilities from the same vendor
- CVE-2026-65400Apple macOS Improper Authentication Vulnerability5.8 · Actively exploited
- CVE-2025-43520Apple Multiple Products Classic Buffer Overflow Vulnerability3.4 · Background exploitation
- CVE-2025-43510Apple Multiple Products Improper Locking Vulnerability4.3 · Background exploitation
- CVE-2025-31277Apple Multiple Products Buffer Overflow Vulnerability5.4 · Background exploitation
- CVE-2023-43000Apple Multiple products Use-After-Free Vulnerability5.4 · Background exploitation
- CVE-2023-41974Apple iOS and iPadOS Use-After-Free Vulnerability4.4 · Background exploitation