Buffer overflow in Apple iOS And Ipados
CVE-2026-84511
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. Processing a maliciously crafted asset catalog may lead to unexpected process termination.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (5.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 5.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
Weakness classification (CWE)
References
- support.apple.com/en-us/149034 (Vendor Advisory)
- support.apple.com/en-us/149035 (Vendor Advisory)
- support.apple.com/en-us/149036 (Vendor Advisory)
- support.apple.com/en-us/149037 (Vendor Advisory)
- support.apple.com/en-us/149038 (Vendor Advisory)
- support.apple.com/en-us/149042 (Vendor Advisory)
- support.apple.com/en-us/149043 (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-84511?
- CVE-2026-84511 is a high-severity vulnerability in Apple iOS And Ipados, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-09-14.
- How severe is CVE-2026-84511?
- High severity. CVSS v3 base score is 7.8 out of 10.