Improper input validation in Apple iOS
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
A denial of service issue was addressed with improved input validation. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5. A remote attacker may be able to cause a denial of service.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apple | iOS | before iOS 13.5 and iPadOS 13.5 | iOS 13.5 and iPadOS 13.5 | Patch available | CNA |
| Apple | macOS | before macOS Catalina 10.15.5 | macOS Catalina 10.15.5 | Patch available | CNA |
Remediation
- Fix · CNA iOS (Apple) Fixed in iOS 13.5 and iPadOS 13.5
- Fix · CNA macOS (Apple) Fixed in macOS Catalina 10.15.5
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apple iOS iOS 13.5 and iPadOS 13.5
42 records Highest priority Priority CRITICAL 1 CRITICAL, 2 HIGH, 8 MEDIUM, 31 LOW
Other records, highest priority first
- TI-2020-07896 Out-of-bounds write in Apple iOSPriority CRITICAL 97
- TI-2020-07926 Apple iOS: A remote attacker may be able to cause arbitrary code executionPriority HIGH 81
- TI-2020-07897 Out-of-bounds write in Apple iOSPriority HIGH 79
- Release ·
Apple macOS macOS Catalina 10.15.5
41 records Highest priority Priority MEDIUM 2 MEDIUM, 39 LOW
Other records, highest priority first
- TI-2020-07869 Out-of-bounds write in Apple iOSPriority MEDIUM 43
- TI-2020-07868 Out-of-bounds write in Apple iOSPriority MEDIUM 43
- TI-2020-07873 Out-of-bounds read in Apple iOSPriority LOW 39
Timeline
- 2026-10-02 Threatist record created from CVE-2020-9826
- 2026-10-03 Alias added: GHSA-448m-34cr-g6x8
References
More Apple Ipados vulnerabilities
- TI-2025-28008 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
- TI-2025-22441 Apple iOS and iPadOS: An attacker with arbitrary read and write capability may be able to… KEVCVSS 3.1CRITICAL 9.8
- TI-2025-22440 Memory corruption in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
- TI-2025-17951 Out-of-bounds write in Apple Safari KEVCVSS 3.1CRITICAL 10.0
- TI-2025-17847 Use after free in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
- TI-2022-06854 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2020-9826 · CVE Program
- CVE-2020-9826 · NVD
- FIRST EPSS
- GHSA-448m-34cr-g6x8 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences