Type confusion in Apple Safari
Priority LOW 29CWE-843Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-843 and the CVSS impact.
Summary
A logic issue was addressed with improved state management. This issue is fixed in Safari 27, iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27. Processing maliciously crafted web content may lead to an unexpected process termination.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00371 31st percentileScored 2026-11-07
Fix Fixed Safari (Apple): 27iOS and iPadOS (Apple): 27+4 more productsRed Hat: 9 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apple | Safari | before 27 | 27 | Patch available | CNA |
| Apple | iOS and iPadOS | before 27 | 27 | Patch available | CNA |
| Apple | macOS | before 27 | 27 | Patch available | CNA |
| Apple | tvOS | before 27 | 27 | Patch available | CNA |
| Apple | visionOS | before 27 | 27 | Patch available | CNA |
| Apple | watchOS | before 27 | 27 | Patch available | CNA |
- Safari VendorApple Affected before 27 Fixed in 27 Patch available CNA
- iOS and iPadOS VendorApple Affected before 27 Fixed in 27 Patch available CNA
- macOS VendorApple Affected before 27 Fixed in 27 Patch available CNA
- tvOS VendorApple Affected before 27 Fixed in 27 Patch available CNA
- visionOS VendorApple Affected before 27 Fixed in 27 Patch available CNA
- watchOS VendorApple Affected before 27 Fixed in 27 Patch available CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* | before 27.0 | Vulnerable | Apple |
| cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* | before 27.0 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 27.0 | Vulnerable | Apple |
| cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* | before 27.0 | Vulnerable | Apple |
| cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* | before 27.0 | Vulnerable | Apple |
| cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* | before 27.0 | Vulnerable | Apple |
| cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* | before 27.0 | Vulnerable | Apple |
- cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple
- cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple
Remediation
- Fix · CNA Safari (Apple) Fixed in 27
- Fix · CNA iOS and iPadOS (Apple) Fixed in 27
- Fix · CNA macOS (Apple) Fixed in 27
- Fix · CNA tvOS (Apple) Fixed in 27
- Fix · CNA visionOS (Apple) Fixed in 27
- Fix · CNA watchOS (Apple) Fixed in 27
Red Hat 9 advisories
- RHSA-2026:95403 Released 2026-11-05 · Red Hat rating Criticalwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) webkit2gtk3-2.54.0-1.el8_4, webkit2gtk3-devel-2.54.0-1.el8_4, webkit2gtk3-jsc-2.54.0-1.el8_4 +1
- Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) webkit2gtk3-2.54.0-1.el8_4, webkit2gtk3-devel-2.54.0-1.el8_4, webkit2gtk3-jsc-2.54.0-1.el8_4 +1
- RHSA-2026:93435 Released 2026-11-02 · Red Hat rating Criticalwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream E4S (v.8.8) webkit2gtk3-2.54.0-1.el8_8, webkit2gtk3-devel-2.54.0-1.el8_8, webkit2gtk3-jsc-2.54.0-1.el8_8 +1
- Red Hat Enterprise Linux AppStream TUS (v.8.8) webkit2gtk3-2.54.0-1.el8_8, webkit2gtk3-devel-2.54.0-1.el8_8, webkit2gtk3-jsc-2.54.0-1.el8_8 +1
- RHSA-2026:92339 Released 2026-10-29 · Red Hat rating Criticalwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream AUS (v.8.6) webkit2gtk3-2.54.0-1.el8_6, webkit2gtk3-devel-2.54.0-1.el8_6, webkit2gtk3-jsc-2.54.0-1.el8_6 +1
- Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) webkit2gtk3-2.54.0-1.el8_6, webkit2gtk3-devel-2.54.0-1.el8_6, webkit2gtk3-jsc-2.54.0-1.el8_6 +1
Show 6 more Red Hat advisories
- RHSA-2026:92216 Released 2026-10-29 · Red Hat rating Criticalwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream E4S (v.9.4) webkit2gtk3-2.54.0-1.el9_4, webkit2gtk3-devel-2.54.0-1.el9_4, webkit2gtk3-jsc-2.54.0-1.el9_4 +1
- RHSA-2026:91631 Released 2026-10-28 · Red Hat rating Criticalwebkitgtk4 security update
- Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4-2.54.0-1.el7_9, webkitgtk4-devel-2.54.0-1.el7_9, webkitgtk4-jsc-2.54.0-1.el7_9 +1
- Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-devel-2.54.0-1.el7_9, webkitgtk4-doc-2.54.0-1.el7_9, webkitgtk4-jsc-devel-2.54.0-1.el7_9
- RHSA-2026:89822 Released 2026-10-27 · Red Hat rating Criticalwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream E4S (v.9.2) webkit2gtk3-2.54.0-1.el9_2, webkit2gtk3-devel-2.54.0-1.el9_2, webkit2gtk3-jsc-2.54.0-1.el9_2 +1
- RHSA-2026:89821 Released 2026-10-26 · Red Hat rating Criticalwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream EUS (v.9.6) webkit2gtk3-2.54.0-1.el9_6, webkit2gtk3-devel-2.54.0-1.el9_6, webkit2gtk3-jsc-2.54.0-1.el9_6 +1
- RHSA-2026:74084 Released 2026-09-30 · Red Hat rating Criticalwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3-2.54.0-1.el8_10, webkit2gtk3-devel-2.54.0-1.el8_10, webkit2gtk3-jsc-2.54.0-1.el8_10 +1
- RHSA-2026:69098 Released 2026-09-21 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3-2.54.0-1.el9_8, webkit2gtk3-devel-2.54.0-1.el9_8, webkit2gtk3-jsc-2.54.0-1.el9_8 +1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apple visionOS 27
92 records Highest priority Priority MEDIUM 8 MEDIUM, 84 LOW
Other records, highest priority first
- TI-2026-46597 Out-of-bounds write in Apple iOS and iPadOSPriority MEDIUM 51
- TI-2026-58158 Buffer overflow in Apple iOS and iPadOSPriority MEDIUM 50
- TI-2026-58121 Double free in Apple iOS and iPadOSPriority MEDIUM 50
- Release ·
Apple watchOS 27
78 records Highest priority Priority MEDIUM 8 MEDIUM, 70 LOW
Other records, highest priority first
- TI-2026-46597 Out-of-bounds write in Apple iOS and iPadOSPriority MEDIUM 51
- TI-2026-58158 Buffer overflow in Apple iOS and iPadOSPriority MEDIUM 50
- TI-2026-58121 Double free in Apple iOS and iPadOSPriority MEDIUM 50
Show 4 more groups
- Release ·
Apple tvOS 27
75 records Highest priority Priority MEDIUM 7 MEDIUM, 68 LOW
Other records, highest priority first
- TI-2026-46597 Out-of-bounds write in Apple iOS and iPadOSPriority MEDIUM 51
- TI-2026-58158 Buffer overflow in Apple iOS and iPadOSPriority MEDIUM 50
- TI-2026-58121 Double free in Apple iOS and iPadOSPriority MEDIUM 50
- Release ·
Apple macOS 27
50 records Highest priority Priority MEDIUM 2 MEDIUM, 48 LOW
Other records, highest priority first
- TI-2026-58087 Buffer overflow in Apple macOSPriority MEDIUM 49
- TI-2026-58171 Information disclosure in Apple iOS and iPadOSPriority MEDIUM 42
- TI-2026-59405 Protection mechanism failure in Apple macOSPriority LOW 39
- Release ·
Apple iOS and iPadOS 27
45 records Highest priority Priority MEDIUM 2 MEDIUM, 43 LOW
Other records, highest priority first
- TI-2026-58158 Buffer overflow in Apple iOS and iPadOSPriority MEDIUM 50
- TI-2026-58171 Information disclosure in Apple iOS and iPadOSPriority MEDIUM 42
- TI-2026-59406 Information disclosure in Apple iOS and iPadOSPriority LOW 39
- Release ·
Apple Safari 27
5 records Highest priority Priority LOW 5 LOW
Other records, highest priority first
- TI-2026-46286 Improper privilege management in Apple SafariPriority LOW 29
- TI-2026-59408 Cross-site scripting in Apple SafariPriority LOW 24
- TI-2026-59407 Missing authorization in Apple SafariPriority LOW 24
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:74084 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:69098 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2026:95403 |
| Red Hat Enterprise Linux AppStream AUS (v.8.6) | Fixed | RHSA-2026:92339 |
| Red Hat Enterprise Linux AppStream E4S (v.8.8) | Fixed | RHSA-2026:93435 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2026:89822 |
| Red Hat Enterprise Linux AppStream E4S (v.9.4) | Fixed | RHSA-2026:92216 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:89821 |
| Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) | Fixed | RHSA-2026:95403 |
| Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) | Fixed | RHSA-2026:92339 |
| Red Hat Enterprise Linux AppStream TUS (v.8.8) | Fixed | RHSA-2026:93435 |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Fixed | RHSA-2026:91631 |
| Red Hat Enterprise Linux Server Optional (v. 7 ELS) | Fixed | RHSA-2026:91631 |
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-84635
- 2026-10-03 Alias added: GHSA-r9q9-7344-x2cc
- 2026-10-26 Fix available: RHSA-2026:89821 · Red Hat
- 2026-10-26 Fix available: Red Hat Enterprise Linux AppStream EUS (v.9.6) · Red Hat
- 2026-10-27 Fix available: Red Hat Enterprise Linux AppStream E4S (v.9.2) · Red Hat
- 2026-10-29 Fix available: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS) · Red Hat
- 2026-10-29 Fix available: RHSA-2026:89822 · Red Hat
- 2026-10-29 Fix available: RHSA-2026:91631 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:92216 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:92339 · Red Hat
- 2026-10-30 Fix available: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) · Red Hat
- 2026-11-02 Fix available: RHSA-2026:93435 · Red Hat
- 2026-11-02 Fix available: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8) · Red Hat
- 2026-11-05 Fix available: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) · Red Hat
- 2026-11-06 Fix available: RHSA-2026:95403 · Red Hat
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-2026-84635 · CVE Program
- CVE-2026-84635 · NVD
- FIRST EPSS
- GHSA-r9q9-7344-x2cc · GitHub Advisory Database · CC BY 4.0
- CVE-2026-84635 · 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