Use after free in Apple Safari
Priority LOW 29CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- 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-416 and the CVSS impact.
Summary
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, 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 0.00333 26th percentileScored 2026-11-07
Fix Partial Safari (Apple): 26.6.1iOS and iPadOS (Apple): 18.7.10, 26.6.1+4 more productsRed Hat: 11 advisoriesRed Hat: 13 fixed, 1 without a fix
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 26.6.1 | 26.6.1 | Patch available | CNA |
| Apple | iOS and iPadOS | before 18.7.10; before 26.6.1 | 18.7.10, 26.6.1 | Patch available | CNA |
| Apple | macOS | before 26.6.2 | 26.6.2 | 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 26.6.1 Fixed in 26.6.1 Patch available CNA
- iOS and iPadOS VendorApple Affected before 18.7.10; before 26.6.1 Fixed in 18.7.10, 26.6.1 Patch available CNA
- macOS VendorApple Affected before 26.6.2 Fixed in 26.6.2 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 · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* | before 26.6.1 | Vulnerable | Apple |
| cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* | before 26.6.1 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 26.6.1 | Vulnerable | Apple |
| cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* | 26.0 to before 26.6.2 | Vulnerable | Apple |
- cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 26.6.1 Vulnerable ·Apple
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 26.6.1 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 26.6.1 Vulnerable ·Apple
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 26.0 to before 26.6.2 Vulnerable ·Apple
Remediation
- Fix · CNA Safari (Apple) Fixed in 26.6.1
- Fix · CNA iOS and iPadOS (Apple) Fixed in 18.7.10, 26.6.1
- Fix · CNA macOS (Apple) Fixed in 26.6.2
- Fix · CNA tvOS (Apple) Fixed in 27
- Fix · CNA visionOS (Apple) Fixed in 27
- Fix · CNA watchOS (Apple) Fixed in 27
Red Hat 11 advisories
- 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
- RHSA-2026:59326 Released 2026-08-25 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream E4S (v.8.8) webkit2gtk3-2.52.5-1.el8_8, webkit2gtk3-devel-2.52.5-1.el8_8, webkit2gtk3-jsc-2.52.5-1.el8_8 +1
- Red Hat Enterprise Linux AppStream TUS (v.8.8) webkit2gtk3-2.52.5-1.el8_8, webkit2gtk3-devel-2.52.5-1.el8_8, webkit2gtk3-jsc-2.52.5-1.el8_8 +1
Show 8 more Red Hat advisories
- RHSA-2026:59325 Released 2026-08-25 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream AUS (v.8.6) webkit2gtk3-2.52.5-1.el8_6, webkit2gtk3-devel-2.52.5-1.el8_6, webkit2gtk3-jsc-2.52.5-1.el8_6 +1
- Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) webkit2gtk3-2.52.5-1.el8_6, webkit2gtk3-devel-2.52.5-1.el8_6, webkit2gtk3-jsc-2.52.5-1.el8_6 +1
- RHSA-2026:58564 Released 2026-08-24 · Red Hat rating Importantwebkitgtk4 security update
- Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4-2.52.5-1.el7_9, webkitgtk4-devel-2.52.5-1.el7_9, webkitgtk4-jsc-2.52.5-1.el7_9 +1
- Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-devel-2.52.5-1.el7_9, webkitgtk4-doc-2.52.5-1.el7_9, webkitgtk4-jsc-devel-2.52.5-1.el7_9
- RHSA-2026:58550 Released 2026-08-24 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream E4S (v.9.2) webkit2gtk3-2.52.5-1.el9_2, webkit2gtk3-devel-2.52.5-1.el9_2, webkit2gtk3-jsc-2.52.5-1.el9_2 +1
- RHSA-2026:57348 Released 2026-08-20 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) webkit2gtk3-2.52.5-1.el8_4, webkit2gtk3-devel-2.52.5-1.el8_4, webkit2gtk3-jsc-2.52.5-1.el8_4 +1
- Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) webkit2gtk3-2.52.5-1.el8_4, webkit2gtk3-devel-2.52.5-1.el8_4, webkit2gtk3-jsc-2.52.5-1.el8_4 +1
- RHSA-2026:54634 Released 2026-08-13 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream E4S (v.9.4) webkit2gtk3-2.52.5-1.el9_4, webkit2gtk3-devel-2.52.5-1.el9_4, webkit2gtk3-jsc-2.52.5-1.el9_4 +1
- RHSA-2026:54572 Released 2026-08-13 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream EUS (v.9.6) webkit2gtk3-2.52.5-1.el9_6, webkit2gtk3-devel-2.52.5-1.el9_6, webkit2gtk3-jsc-2.52.5-1.el9_6 +1
- RHSA-2026:42062 Released 2026-07-20 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3-2.52.5-1.el9_8, webkit2gtk3-devel-2.52.5-1.el9_8, webkit2gtk3-jsc-2.52.5-1.el9_8 +1
- RHSA-2026:42088 Released 2026-07-20 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3-2.52.5-1.el8_10, webkit2gtk3-devel-2.52.5-1.el8_10, webkit2gtk3-jsc-2.52.5-1.el8_10 +1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apple visionOS 27
29 records Highest priority Priority MEDIUM 3 MEDIUM, 26 LOW
Other records, highest priority first
- TI-2026-46546 Integer overflow in Apple iOS and iPadOSPriority MEDIUM 41
- TI-2026-46543 Use after free in Apple iOS and iPadOSPriority MEDIUM 40
- TI-2026-31883 Memory corruption in Apple SafariPriority MEDIUM 40
- Release ·
Apple macOS 26.6.2
24 records Highest priority Priority MEDIUM 2 MEDIUM, 22 LOW
Other records, highest priority first
- TI-2026-46543 Use after free in Apple iOS and iPadOSPriority MEDIUM 40
- TI-2026-31883 Memory corruption in Apple SafariPriority MEDIUM 40
- TI-2026-46547 Uncontrolled resource consumption in Apple iOS and iPadOSPriority LOW 29
Show 3 more groups
- Release ·
Apple Safari, iOS and iPadOS 18.7.10, 26.6.1
21 records Highest priority Priority MEDIUM 1 MEDIUM, 20 LOW
Other records, highest priority first
- TI-2026-31883 Memory corruption in Apple SafariPriority MEDIUM 40
- TI-2026-46310 Information disclosure in Apple SafariPriority LOW 29
- TI-2026-46250 Use after free in Apple SafariPriority LOW 29
- Release ·
Apple watchOS 27
13 records Highest priority Priority MEDIUM 3 MEDIUM, 10 LOW
Other records, highest priority first
- TI-2026-46546 Integer overflow in Apple iOS and iPadOSPriority MEDIUM 41
- TI-2026-46543 Use after free in Apple iOS and iPadOSPriority MEDIUM 40
- TI-2026-31883 Memory corruption in Apple SafariPriority MEDIUM 40
- Release ·
Apple tvOS 27
12 records Highest priority Priority MEDIUM 3 MEDIUM, 9 LOW
Other records, highest priority first
- TI-2026-46546 Integer overflow in Apple iOS and iPadOSPriority MEDIUM 41
- TI-2026-46543 Use after free in Apple iOS and iPadOSPriority MEDIUM 40
- TI-2026-31883 Memory corruption in Apple SafariPriority MEDIUM 40
Vendor assessments
Red Hat
Red Hat rating: Important. 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-2026:42088, RHSA-2026:74084 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:42062, RHSA-2026:69098 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2026:57348 |
| Red Hat Enterprise Linux AppStream AUS (v.8.6) | Fixed | RHSA-2026:59325 |
| Red Hat Enterprise Linux AppStream E4S (v.8.8) | Fixed | RHSA-2026:59326 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2026:58550 |
| Red Hat Enterprise Linux AppStream E4S (v.9.4) | Fixed | RHSA-2026:54634 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:54572 |
| Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) | Fixed | RHSA-2026:57348 |
| Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) | Fixed | RHSA-2026:59325 |
| Red Hat Enterprise Linux AppStream TUS (v.8.8) | Fixed | RHSA-2026:59326 |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Fixed | RHSA-2026:58564 |
| Red Hat Enterprise Linux Server Optional (v. 7 ELS) | Fixed | RHSA-2026:58564 |
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-64787
- 2026-10-03 Alias added: GHSA-p984-67jc-vc4w
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-2026-64787 · CVE Program
- CVE-2026-64787 · NVD
- FIRST EPSS
- GHSA-p984-67jc-vc4w · GitHub Advisory Database · CC BY 4.0
- CVE-2026-64787 · 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