Buffer overflow in Apple iOS And Ipados
CVE-2026-20698
The issue was addressed with improved memory handling. This issue is fixed in iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. An app may be able to cause unexpected system termination or corrupt kernel memory.
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:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (23.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Apple iOS And Ipados — versions 0
- Apple Ipados
- Apple Iphone OS
- Apple macOS — versions 0
- Apple tvOS — versions 0
- Apple Visionos — versions 0
- Apple watchOS — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support.apple.com/en-us/126792 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/126794 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/126797 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/126798 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/126799 (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-20698?
- CVE-2026-20698 is a high-severity vulnerability in Apple iOS And Ipados, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-03-25.
- How severe is CVE-2026-20698?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2026-20698 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.