Out-of-bounds read in Apple iOS
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, tvOS 13.4.8, watchOS 6.2.8. Processing a maliciously crafted audio file may lead to arbitrary code execution.
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 13.6 and iPadOS 13.6 | iOS 13.6 and iPadOS 13.6 | Patch available | CNA |
| Apple | macOS | before macOS Catalina 10.15.6 | macOS Catalina 10.15.6 | Patch available | CNA |
| Apple | tvOS | before tvOS 13.4.8 | tvOS 13.4.8 | Patch available | CNA |
| Apple | watchOS | before watchOS 6.2.8 | watchOS 6.2.8 | Patch available | CNA |
- iOS VendorApple Affected before iOS 13.6 and iPadOS 13.6 Fixed in iOS 13.6 and iPadOS 13.6 Patch available CNA
- macOS VendorApple Affected before macOS Catalina 10.15.6 Fixed in macOS Catalina 10.15.6 Patch available CNA
- tvOS VendorApple Affected before tvOS 13.4.8 Fixed in tvOS 13.4.8 Patch available CNA
- watchOS VendorApple Affected before watchOS 6.2.8 Fixed in watchOS 6.2.8 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* | before 13.6 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 13.6 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* | before 10.15.6 | Vulnerable | Apple |
| cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* | before 13.4.8 | Vulnerable | Apple |
| cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* | before 6.2.8 | Vulnerable | Apple |
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 13.6 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 13.6 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.15.6 Vulnerable ·Apple
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 13.4.8 Vulnerable ·Apple
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 6.2.8 Vulnerable ·Apple
Remediation
- Fix · CNA iOS (Apple) Fixed in iOS 13.6 and iPadOS 13.6
- Fix · CNA macOS (Apple) Fixed in macOS Catalina 10.15.6
- Fix · CNA tvOS (Apple) Fixed in tvOS 13.4.8
- Fix · CNA watchOS (Apple) Fixed in watchOS 6.2.8
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apple iOS iOS 13.6 and iPadOS 13.6
28 records Highest priority Priority CRITICAL 1 CRITICAL, 1 HIGH, 4 MEDIUM, 22 LOW
Other records, highest priority first
- TI-2020-07980 Out-of-bounds write in Apple iOSPriority CRITICAL 93
- TI-2020-08007 An issue existed in the handling of environment variables.Priority HIGH 82
- TI-2020-07969 Use after free in Apple iOSPriority MEDIUM 49
- Release ·
Apple tvOS tvOS 13.4.8
23 records Highest priority Priority CRITICAL 1 CRITICAL, 5 MEDIUM, 17 LOW
Other records, highest priority first
- TI-2020-07980 Out-of-bounds write in Apple iOSPriority CRITICAL 93
- TI-2020-07969 Use after free in Apple iOSPriority MEDIUM 49
- TI-2020-07991 Out-of-bounds read in Apple macOSPriority MEDIUM 48
Show 2 more groups
- Release ·
Apple watchOS watchOS 6.2.8
21 records Highest priority Priority MEDIUM 4 MEDIUM, 17 LOW
Other records, highest priority first
- TI-2020-07969 Use after free in Apple iOSPriority MEDIUM 49
- TI-2020-07991 Out-of-bounds read in Apple macOSPriority MEDIUM 48
- TI-2020-07967 Use after free in Apple iOSPriority MEDIUM 43
- Release ·
Apple macOS macOS Catalina 10.15.6
15 records Highest priority Priority HIGH 1 HIGH, 3 MEDIUM, 11 LOW
Other records, highest priority first
- TI-2020-08007 An issue existed in the handling of environment variables.Priority HIGH 82
- TI-2020-07991 Out-of-bounds read in Apple macOSPriority MEDIUM 48
- TI-2020-07940 Apple macOS: An application may be able to execute arbitrary code with kernel privilegesPriority MEDIUM 47
Timeline
- 2026-10-02 Threatist record created from CVE-2020-9891
- 2026-10-03 Alias added: GHSA-84fj-q65v-gcw2
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-2020-9891 · CVE Program
- CVE-2020-9891 · NVD
- FIRST EPSS
- GHSA-84fj-q65v-gcw2 · 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