Out-of-bounds write in Apple iOS and iPadOS
Priority LOW 38CWE-787Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 3 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.
Summary
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, watchOS 8, Safari 15, tvOS 15, iOS 15 and iPadOS 15, iTunes 12.12 for Windows. Processing maliciously crafted web content may lead to arbitrary code execution.
Why it matters now
EPSS 0.01904 79th percentileScored 2026-11-07
Fix Partial iOS and iPadOS (Apple): 14.8, 15tvOS (Apple): 15+3 more productsRed Hat: 2 advisoriesRed Hat: 3 fixed, 2 without a fix
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 and iPadOS | before 14.8 | 14.8 | Patch available | CNA |
| Apple | iOS and iPadOS | before 15 | 15 | Patch available | CNA |
| Apple | tvOS | before 15 | 15 | Patch available | CNA |
| Apple | Safari | before 15 | 15 | Patch available | CNA |
| Apple | iTunes for Windows | before 12.12 | 12.12 | Patch available | CNA |
| Apple | watchOS | before 8 | 8 | Patch available | CNA |
- iOS and iPadOS VendorApple Affected before 14.8 Fixed in 14.8 Patch available CNA
- iOS and iPadOS VendorApple Affected before 15 Fixed in 15 Patch available CNA
- tvOS VendorApple Affected before 15 Fixed in 15 Patch available CNA
- Safari VendorApple Affected before 15 Fixed in 15 Patch available CNA
- iTunes for Windows VendorApple Affected before 12.12 Fixed in 12.12 Patch available CNA
- watchOS VendorApple Affected before 8 Fixed in 8 Patch available CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apple:itunes:*:*:*:*:*:windows:*:* | before 12.12 | Vulnerable | Apple |
| cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* | before 15.0 | Vulnerable | Apple |
| cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* | before 14.8 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 14.8 | Vulnerable | Apple |
| cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* | before 12.0.1 | Vulnerable | Apple |
| cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* | before 15.0 | Vulnerable | Apple |
| cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* | before 8.0 | Vulnerable | Apple |
- cpe:2.3:a:apple:itunes:*:*:*:*:*:windows:*:* Versions before 12.12 Vulnerable ·Apple
- cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 15.0 Vulnerable ·Apple
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 14.8 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 14.8 Vulnerable ·Apple
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 12.0.1 Vulnerable ·Apple
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 15.0 Vulnerable ·Apple
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 8.0 Vulnerable ·Apple
Remediation
- Fix · CNA iOS and iPadOS (Apple) Fixed in 14.8
- Fix · CNA iOS and iPadOS (Apple) Fixed in 15
- Fix · CNA tvOS (Apple) Fixed in 15
- Fix · CNA Safari (Apple) Fixed in 15
- Fix · CNA iTunes for Windows (Apple) Fixed in 12.12
- Fix · CNA watchOS (Apple) Fixed in 8
Red Hat 2 advisories
- RHSA-2025:10364 Released 2025-07-07 · Red Hat rating Importantwebkitgtk4 security update
- Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4-2.48.3-2.el7_9, webkitgtk4-devel-2.48.3-2.el7_9, webkitgtk4-jsc-2.48.3-2.el7_9 +1
- Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-devel-2.48.3-2.el7_9, webkitgtk4-doc-2.48.3-2.el7_9, webkitgtk4-jsc-devel-2.48.3-2.el7_9
- RHSA-2022:1777 Released 2022-05-10 · Red Hat rating Moderatewebkit2gtk3 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3-2.34.6-1.el8, webkit2gtk3-devel-2.34.6-1.el8, webkit2gtk3-jsc-2.34.6-1.el8 +1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apple iOS and iPadOS 15
12 records Highest priority Priority MEDIUM 1 MEDIUM, 11 LOW
Other records, highest priority first
- TI-2021-11208 Apple Security Update - Catalina: Processing a maliciously crafted image may lead to…Priority MEDIUM 40
- TI-2021-11220 Out-of-bounds write in Apple iOS and iPadOSPriority LOW 37
- TI-2021-11218 Out-of-bounds write in Apple iOS and iPadOSPriority LOW 37
- Release ·
Apple watchOS 8
6 records Highest priority Priority MEDIUM 1 MEDIUM, 5 LOW
Other records, highest priority first
- TI-2021-11208 Apple Security Update - Catalina: Processing a maliciously crafted image may lead to…Priority MEDIUM 40
- TI-2021-11218 Out-of-bounds write in Apple iOS and iPadOSPriority LOW 37
- TI-2021-11210 Apple iOS and iPadOS: An application may be able to execute arbitrary code with kernel…Priority LOW 37
Show 4 more groups
- Release ·
Apple tvOS 15
5 records Highest priority Priority MEDIUM 1 MEDIUM, 4 LOW
Other records, highest priority first
- TI-2021-11208 Apple Security Update - Catalina: Processing a maliciously crafted image may lead to…Priority MEDIUM 40
- TI-2021-11218 Out-of-bounds write in Apple iOS and iPadOSPriority LOW 37
- TI-2021-11210 Apple iOS and iPadOS: An application may be able to execute arbitrary code with kernel…Priority LOW 37
- Release ·
Apple iOS and iPadOS 14.8
4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2021-11194 Apple iOS and iPadOS: A remote attacker may be able to cause arbitrary code executionPriority MEDIUM 46
- TI-2021-11220 Out-of-bounds write in Apple iOS and iPadOSPriority LOW 37
- TI-2021-11218 Out-of-bounds write in Apple iOS and iPadOSPriority LOW 37
- Release ·
Apple Safari 15
3 records Highest priority Priority LOW 3 LOW
Other records, highest priority first
- TI-2021-11220 Out-of-bounds write in Apple iOS and iPadOSPriority LOW 37
- TI-2021-11218 Out-of-bounds write in Apple iOS and iPadOSPriority LOW 37
- Release ·
Apple iTunes for Windows 12.12
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2021-11208 Apple Security Update - Catalina: Processing a maliciously crafted image may lead to…Priority MEDIUM 40
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2022:1777 |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Fixed | RHSA-2025:10364 |
| Red Hat Enterprise Linux Server Optional (v. 7 ELS) | Fixed | RHSA-2025:10364 |
Not affected: 1 product
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2021-30849
- 2026-10-03 Alias added: GHSA-4jcp-gxvj-75jh
References
Advisory 12
- https://support.apple.com/en-us/HT212807
- https://support.apple.com/en-us/HT212814
- https://support.apple.com/en-us/HT212819
- https://support.apple.com/en-us/HT212815
- https://support.apple.com/en-us/HT212817
- https://support.apple.com/en-us/HT212816
- 20211027 APPLE-SA-2021-10-26-8 Additional information for APPLE-SA-2021-09-20-5 Safari 15
- 20211027 APPLE-SA-2021-10-26-10 Additional information for APPLE-SA-2021-09-20-2 watchOS 8
- 20211027 APPLE-SA-2021-10-26-11 Additional information for APPLE-SA-2021-09-20-3 tvOS 15
- 20211027 APPLE-SA-2021-10-26-9 Additional information for APPLE-SA-2021-09-20-1 iOS 15 and iPadOS 15
- https://support.apple.com/kb/HT212869
- https://support.apple.com/kb/HT212953
Other 4
- [oss-security] 20211026 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006
- [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006
- [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006
- [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006
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-2021-30849 · CVE Program
- CVE-2021-30849 · NVD
- FIRST EPSS
- GHSA-4jcp-gxvj-75jh · GitHub Advisory Database · CC BY 4.0
- CVE-2021-30849 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences