Buffer overflow in Apple iOS And Ipados
CVE-2026-43718
A stack overflow was addressed with improved input validation. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (33.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Apple iOS And Ipados — versions 0
- Apple Ipados
- Apple Iphone OS
- Apple macOS — versions 0
- Apple Safari — versions 0
- Apple tvOS — versions 0
- Apple Visionos — versions 0
- Apple watchOS — versions 0
Weakness classification (CWE)
References
- support.apple.com/en-us/127594 (Vendor Advisory)
- support.apple.com/en-us/127595 (Vendor Advisory)
- support.apple.com/en-us/127685 (Vendor Advisory)
- support.apple.com/en-us/128068
- support.apple.com/en-us/128069
- support.apple.com/en-us/128070
Frequently asked questions
- What is CVE-2026-43718?
- CVE-2026-43718 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Stack-based Buffer Overflow. CVSS score: 6.5/10. Published 2026-06-29.
- How severe is CVE-2026-43718?
- Medium severity. CVSS v3 base score is 6.5 out of 10.