Observable discrepancy in Apple Safari
Priority LOW 38CWE-203Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Partial Red Hat: 13 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-203.
Summary
This issue was addressed with improved checks. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Websites may know if the user has visited a given link.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00467 40th percentileScored 2026-11-07
Fix Partial Safari (Apple): 26.6iOS and iPadOS (Apple): 26.6+4 more productsRed Hat: 9 advisoriesRed Hat: 13 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 26.6 | 26.6 | Patch available | CNA |
| Apple | iOS and iPadOS | before 26.6 | 26.6 | Patch available | CNA |
| Apple | macOS | before 26.6 | 26.6 | Patch available | CNA |
| Apple | tvOS | before 26.6 | 26.6 | Patch available | CNA |
| Apple | visionOS | before 26.6 | 26.6 | Patch available | CNA |
| Apple | watchOS | before 26.6 | 26.6 | Patch available | CNA |
- Safari VendorApple Affected before 26.6 Fixed in 26.6 Patch available CNA
- iOS and iPadOS VendorApple Affected before 26.6 Fixed in 26.6 Patch available CNA
- macOS VendorApple Affected before 26.6 Fixed in 26.6 Patch available CNA
- tvOS VendorApple Affected before 26.6 Fixed in 26.6 Patch available CNA
- visionOS VendorApple Affected before 26.6 Fixed in 26.6 Patch available CNA
- watchOS VendorApple Affected before 26.6 Fixed in 26.6 Patch available CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* | before 26.6 | Vulnerable | Apple |
| cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* | before 26.6 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 26.6 | Vulnerable | Apple |
| cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* | 26.0 to before 26.6 | Vulnerable | Apple |
| cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* | before 26.6 | Vulnerable | Apple |
| cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* | before 26.6 | Vulnerable | Apple |
| cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* | before 26.6 | Vulnerable | Apple |
- cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 26.6 Vulnerable ·Apple
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 26.6 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 26.6 Vulnerable ·Apple
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 26.0 to before 26.6 Vulnerable ·Apple
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 26.6 Vulnerable ·Apple
- cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* Versions before 26.6 Vulnerable ·Apple
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 26.6 Vulnerable ·Apple
Remediation
- Fix · CNA Safari (Apple) Fixed in 26.6
- Fix · CNA iOS and iPadOS (Apple) Fixed in 26.6
- Fix · CNA macOS (Apple) Fixed in 26.6
- Fix · CNA tvOS (Apple) Fixed in 26.6
- Fix · CNA visionOS (Apple) Fixed in 26.6
- Fix · CNA watchOS (Apple) Fixed in 26.6
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 tvOS 26.6
66 records Highest priority Priority MEDIUM 27 MEDIUM, 39 LOW
Other records, highest priority first
- TI-2026-46261 Memory corruption in Apple iOS and iPadOSPriority MEDIUM 51
- TI-2026-46307 Apple iOS and iPadOS: An app may be able to cause unexpected system terminationPriority MEDIUM 50
- TI-2026-46306 Integer overflow in Apple iOS and iPadOSPriority MEDIUM 50
- Release ·
Apple visionOS 26.6
65 records Highest priority Priority MEDIUM 24 MEDIUM, 41 LOW
Other records, highest priority first
- TI-2026-46261 Memory corruption in Apple iOS and iPadOSPriority MEDIUM 51
- TI-2026-46307 Apple iOS and iPadOS: An app may be able to cause unexpected system terminationPriority MEDIUM 50
- TI-2026-46306 Integer overflow in Apple iOS and iPadOSPriority MEDIUM 50
Show 4 more groups
- Release ·
Apple watchOS 26.6
64 records Highest priority Priority MEDIUM 23 MEDIUM, 41 LOW
Other records, highest priority first
- TI-2026-46261 Memory corruption in Apple iOS and iPadOSPriority MEDIUM 51
- TI-2026-46307 Apple iOS and iPadOS: An app may be able to cause unexpected system terminationPriority MEDIUM 50
- TI-2026-46284 Use after free in Apple iOS and iPadOSPriority MEDIUM 50
- Release ·
Apple macOS 26.6
32 records Highest priority Priority MEDIUM 14 MEDIUM, 18 LOW
Other records, highest priority first
- TI-2026-46261 Memory corruption in Apple iOS and iPadOSPriority MEDIUM 51
- TI-2026-46284 Use after free in Apple iOS and iPadOSPriority MEDIUM 50
- TI-2026-46281 Missing authorization in Apple iOS and iPadOSPriority MEDIUM 50
- Release ·
Apple iOS and iPadOS 26.6
25 records Highest priority Priority MEDIUM 12 MEDIUM, 13 LOW
Other records, highest priority first
- TI-2026-46307 Apple iOS and iPadOS: An app may be able to cause unexpected system terminationPriority MEDIUM 50
- TI-2026-46284 Use after free in Apple iOS and iPadOSPriority MEDIUM 50
- TI-2026-46268 Information disclosure in Apple iOS and iPadOSPriority MEDIUM 50
- Release ·
Apple Safari 26.6
9 records Highest priority Priority MEDIUM 2 MEDIUM, 7 LOW
Other records, highest priority first
- TI-2026-46315 Use after free in Apple SafariPriority MEDIUM 40
- TI-2026-46290 Memory corruption in Apple SafariPriority MEDIUM 40
- TI-2026-46254 Out-of-bounds read in Apple SafariPriority LOW 35
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 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: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-64713
- 2026-10-03 Alias added: GHSA-rgqw-gpjq-38pr
- 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
- 2026-10-29 Fix available: RHSA-2026:89822 · Red Hat
- 2026-10-29 Fix available: RHSA-2026:91631 · Red Hat
- 2026-10-29 Fix available: Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS) · 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
- 2026-11-06 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-2026-64713 · CVE Program
- CVE-2026-64713 · NVD
- FIRST EPSS
- GHSA-rgqw-gpjq-38pr · GitHub Advisory Database · CC BY 4.0
- CVE-2026-64713 · 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