Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS 15.8.5, iOS 16.7.12 and iPadOS 16.7.12, iOS 18.6.2 and iPadOS 18.6.2, iPadOS 17.7.10, macOS Sequoia 15.6.1, macOS Sonoma…
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)21 Aug 2025
- Exploited in EUVD (ENISA)21 Aug 2025
- Used by ransomwareno
- EPSS above 10 %65.2%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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 15.8.5 and iPadOS 15.8.5, iOS 16.7.12 and iPadOS 16.7.12, iOS 18.6.2 and iPadOS 18.6.2, iPadOS 17.7.10, macOS Sequoia 15.6.1, macOS Sonoma 14.7.8, macOS Ventura 13.7.8. Processing a malicious image file may result in memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals.
Affected products
- 0 <13.7.8
- 0 <15.6.1
- 0 <17.7.10
- 0 <16.7.12
- 0 <15.8.5
- 0 <18.6.2
- 0 <14.7.8
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
-
Published
-
Exploitation reported (ENISA)
-
Added to the KEV catalog
-
CISA remediation due date
-
EPSS peak: 65.2%
References
Other exploited vulnerabilities from the same vendor
- CVE-2026-86950Apple Multiple Products Out-of-Bounds Write Vulnerability6.7 · Actively exploited
- 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