Improper input validation in Apple Safari
Priority MEDIUM 50CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 15 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.
Summary
A correctness issue was addressed with improved checks. This issue is fixed in Safari 26, iOS 18.7 and iPadOS 18.7, iOS 26 and iPadOS 26, macOS Tahoe 26, tvOS 26, visionOS 26, watchOS 26. Processing maliciously crafted web content may lead to an unexpected process crash.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00774 55th percentileScored 2026-11-07
Fix Partial Safari (Apple): 26iOS and iPadOS (Apple): 18.7, 26+4 more productsRed Hat: 11 advisoriesRed Hat: 15 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- 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 | 26 | Patch available | CNA |
| Apple | iOS and iPadOS | before 18.7; before 26 | 18.7, 26 | Patch available | CNA |
| Apple | macOS | before 26 | 26 | Patch available | CNA |
| Apple | tvOS | before 26 | 26 | Patch available | CNA |
| Apple | visionOS | before 26 | 26 | Patch available | CNA |
| Apple | watchOS | before 26 | 26 | Patch available | CNA |
- Safari VendorApple Affected before 26 Fixed in 26 Patch available CNA
- iOS and iPadOS VendorApple Affected before 18.7; before 26 Fixed in 18.7, 26 Patch available CNA
- macOS VendorApple Affected before 26 Fixed in 26 Patch available CNA
- tvOS VendorApple Affected before 26 Fixed in 26 Patch available CNA
- visionOS VendorApple Affected before 26 Fixed in 26 Patch available CNA
- watchOS VendorApple Affected before 26 Fixed in 26 Patch available CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* | before 26.0 | Vulnerable | Apple |
| cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* | before 18.7 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 18.7 | Vulnerable | Apple |
| cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* | before 26.0 | Vulnerable | Apple |
| cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* | before 26.0 | Vulnerable | Apple |
| cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* | before 26.0 | Vulnerable | Apple |
| cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* | before 26.0 | Vulnerable | Apple |
| cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:* | before 2.48.7 | Vulnerable | WebKitGTK |
| cpe:2.3:a:wpewebkit:wpe_webkit:*:*:*:*:*:*:*:* | before 2.48.7 | Vulnerable | Wpewebkit |
- cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 26.0 Vulnerable ·Apple
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 18.7 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 18.7 Vulnerable ·Apple
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 26.0 Vulnerable ·Apple
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 26.0 Vulnerable ·Apple
- cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* Versions before 26.0 Vulnerable ·Apple
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 26.0 Vulnerable ·Apple
- cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:* Versions before 2.48.7 Vulnerable ·WebKitGTK
- cpe:2.3:a:wpewebkit:wpe_webkit:*:*:*:*:*:*:*:* Versions before 2.48.7 Vulnerable ·Wpewebkit
Remediation
- Fix · CNA Safari (Apple) Fixed in 26
- Fix · CNA iOS and iPadOS (Apple) Fixed in 18.7, 26
- Fix · CNA macOS (Apple) Fixed in 26
- Fix · CNA tvOS (Apple) Fixed in 26
- Fix · CNA visionOS (Apple) Fixed in 26
- Fix · CNA watchOS (Apple) Fixed in 26
Red Hat 11 advisories
- RHSA-2025:20922 Released 2025-11-11 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3-2.50.1-1.el9_7, webkit2gtk3-devel-2.50.1-1.el9_7, webkit2gtk3-jsc-2.50.1-1.el9_7 +1
- RHSA-2025:19352 Released 2025-10-30 · Red Hat rating Importantwebkitgtk4 security update
- Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4-2.50.0-1.el7_9, webkitgtk4-devel-2.50.0-1.el7_9, webkitgtk4-jsc-2.50.0-1.el7_9 +1
- Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-devel-2.50.0-1.el7_9, webkitgtk4-doc-2.50.0-1.el7_9, webkitgtk4-jsc-devel-2.50.0-1.el7_9
- RHSA-2025:19165 Released 2025-10-28 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) webkit2gtk3-2.50.0-1.el8_4, webkit2gtk3-devel-2.50.0-1.el8_4, webkit2gtk3-jsc-2.50.0-1.el8_4 +1
- Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) webkit2gtk3-2.50.0-1.el8_4, webkit2gtk3-devel-2.50.0-1.el8_4, webkit2gtk3-jsc-2.50.0-1.el8_4 +1
Show 8 more Red Hat advisories
- RHSA-2025:19157 Released 2025-10-28 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) webkit2gtk3-2.50.0-1.el8_2, webkit2gtk3-devel-2.50.0-1.el8_2, webkit2gtk3-jsc-2.50.0-1.el8_2 +1
- RHSA-2025:19109 Released 2025-10-27 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream AUS (v.8.6) webkit2gtk3-2.50.0-1.el8_6, webkit2gtk3-devel-2.50.0-1.el8_6, webkit2gtk3-jsc-2.50.0-1.el8_6 +1
- Red Hat Enterprise Linux AppStream E4S (v.8.6) webkit2gtk3-2.50.0-1.el8_6, webkit2gtk3-devel-2.50.0-1.el8_6, webkit2gtk3-jsc-2.50.0-1.el8_6 +1
- Red Hat Enterprise Linux AppStream TUS (v.8.6) webkit2gtk3-2.50.0-1.el8_6, webkit2gtk3-devel-2.50.0-1.el8_6, webkit2gtk3-jsc-2.50.0-1.el8_6 +1
- RHSA-2025:18097 Released 2025-10-15 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3-2.50.1-0.el9_6, webkit2gtk3-devel-2.50.1-0.el9_6, webkit2gtk3-jsc-2.50.1-0.el9_6 +1
- RHSA-2025:17807 Released 2025-10-13 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream E4S (v.8.8) webkit2gtk3-2.50.0-1.el8_8.1, webkit2gtk3-devel-2.50.0-1.el8_8.1, webkit2gtk3-jsc-2.50.0-1.el8_8.1 +1
- Red Hat Enterprise Linux AppStream TUS (v.8.8) webkit2gtk3-2.50.0-1.el8_8.1, webkit2gtk3-devel-2.50.0-1.el8_8.1, webkit2gtk3-jsc-2.50.0-1.el8_8.1 +1
- RHSA-2025:17802 Released 2025-10-13 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3-2.50.0-1.el8_10, webkit2gtk3-devel-2.50.0-1.el8_10, webkit2gtk3-jsc-2.50.0-1.el8_10 +1
- RHSA-2025:17743 Released 2025-10-13 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream E4S (v.9.2) webkit2gtk3-2.50.0-2.el9_2, webkit2gtk3-devel-2.50.0-2.el9_2, webkit2gtk3-jsc-2.50.0-2.el9_2 +1
- RHSA-2025:17741 Released 2025-10-13 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream EUS (v.9.4) webkit2gtk3-2.50.0-2.el9_4, webkit2gtk3-devel-2.50.0-2.el9_4, webkit2gtk3-jsc-2.50.0-2.el9_4 +1
- RHSA-2025:17643 Released 2025-10-09 · Red Hat rating Importantwebkit2gtk3 security update
- Red Hat Enterprise Linux AppStream E4S (v.9.0) webkit2gtk3-2.50.0-2.el9_0, webkit2gtk3-devel-2.50.0-2.el9_0, webkit2gtk3-jsc-2.50.0-2.el9_0 +1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apple macOS 26
35 records Highest priority Priority MEDIUM 4 MEDIUM, 31 LOW
Other records, highest priority first
- TI-2025-28054 Improper input validation in Apple iOS and iPadOSPriority MEDIUM 51
- TI-2025-28050 Memory corruption in Apple SafariPriority MEDIUM 50
- TI-2025-28036 Missing authorization in Apple iOS and iPadOSPriority MEDIUM 40
- Release ·
Apple watchOS 26
18 records Highest priority Priority MEDIUM 6 MEDIUM, 12 LOW
Other records, highest priority first
- TI-2025-22492 Improper authorization in Apple iOS and iPadOSPriority MEDIUM 52
- TI-2025-28065 Apple iOS and iPadOS: A UDP server socket bound to a local interface may become bound to…Priority MEDIUM 51
- TI-2025-28054 Improper input validation in Apple iOS and iPadOSPriority MEDIUM 51
Show 4 more groups
- Release ·
Apple visionOS 26
17 records Highest priority Priority MEDIUM 4 MEDIUM, 13 LOW
Other records, highest priority first
- TI-2025-28065 Apple iOS and iPadOS: A UDP server socket bound to a local interface may become bound to…Priority MEDIUM 51
- TI-2025-28054 Improper input validation in Apple iOS and iPadOSPriority MEDIUM 51
- TI-2025-28050 Memory corruption in Apple SafariPriority MEDIUM 50
- Release ·
Apple tvOS 26
16 records Highest priority Priority MEDIUM 6 MEDIUM, 10 LOW
Other records, highest priority first
- TI-2025-22492 Improper authorization in Apple iOS and iPadOSPriority MEDIUM 52
- TI-2025-28065 Apple iOS and iPadOS: A UDP server socket bound to a local interface may become bound to…Priority MEDIUM 51
- TI-2025-28054 Improper input validation in Apple iOS and iPadOSPriority MEDIUM 51
- Release ·
Apple iOS and iPadOS 18.7, 26
11 records Highest priority Priority MEDIUM 4 MEDIUM, 7 LOW
Other records, highest priority first
- TI-2025-28068 Information disclosure in Apple iOS and iPadOSPriority MEDIUM 51
- TI-2025-28065 Apple iOS and iPadOS: A UDP server socket bound to a local interface may become bound to…Priority MEDIUM 51
- TI-2025-28064 Missing authorization in Apple iOS and iPadOSPriority MEDIUM 40
- Release ·
Apple Safari 26
7 records Highest priority Priority MEDIUM 2 MEDIUM, 5 LOW
Other records, highest priority first
- TI-2025-28050 Memory corruption in Apple SafariPriority MEDIUM 50
- TI-2025-27980 Memory corruption in Apple SafariPriority LOW 31
- TI-2025-28062 Information disclosure in Apple SafariPriority LOW 30
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-2025:17802 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2025:18097, RHSA-2025:20922 |
| Red Hat Enterprise Linux AppStream AUS (v. 8.2) | Fixed | RHSA-2025:19157 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2025:19165 |
| Red Hat Enterprise Linux AppStream AUS (v.8.6) | Fixed | RHSA-2025:19109 |
| Red Hat Enterprise Linux AppStream E4S (v.8.6) | Fixed | RHSA-2025:19109 |
| Red Hat Enterprise Linux AppStream E4S (v.8.8) | Fixed | RHSA-2025:17807 |
| Red Hat Enterprise Linux AppStream E4S (v.9.0) | Fixed | RHSA-2025:17643 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2025:17743 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2025:17741 |
| Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) | Fixed | RHSA-2025:19165 |
| Red Hat Enterprise Linux AppStream TUS (v.8.6) | Fixed | RHSA-2025:19109 |
| Red Hat Enterprise Linux AppStream TUS (v.8.8) | Fixed | RHSA-2025:17807 |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Fixed | RHSA-2025:19352 |
| Red Hat Enterprise Linux Server Optional (v. 7 ELS) | Fixed | RHSA-2025:19352 |
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2025-43342
- 2026-10-03 Alias added: GHSA-f8v5-f9hr-87fq
References
Advisory 11
- https://support.apple.com/en-us/125108
- https://support.apple.com/en-us/125109
- https://support.apple.com/en-us/125113
- https://support.apple.com/en-us/125114
- https://support.apple.com/en-us/125115
- https://support.apple.com/en-us/125116
- http://seclists.org/fulldisclosure/2025/Sep/49
- http://seclists.org/fulldisclosure/2025/Sep/53
- http://seclists.org/fulldisclosure/2025/Sep/57
- http://seclists.org/fulldisclosure/2025/Sep/59
- http://www.openwall.com/lists/oss-security/2025/09/22/3
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-2025-43342 · CVE Program
- CVE-2025-43342 · NVD
- FIRST EPSS
- GHSA-f8v5-f9hr-87fq · GitHub Advisory Database · CC BY 4.0
- CVE-2025-43342 · 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