CVE-2025-43343
CRITICALCVSS 9.8/10EPSS 0.72%
Last modified
CVE-2025-43343 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The issue was addressed with improved memory handling. This issue is fixed in Safari 26, iOS 26 and iPadOS 26, macOS Tahoe 26, tvOS 26, visionOS 26, watchOS 26. EPSS estimates a 0.72% chance of exploitation in the next 30 days.
Description
The issue was addressed with improved memory handling. This issue is fixed in Safari 26, 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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Safari | < 26.0 |
| Apple | Ipados | < 26.0 |
| Apple | Iphone Os | < 26.0 |
| Apple | Macos | < 26.0 |
| Apple | Tvos | < 26.0 |
| Apple | Visionos | < 26.0 |
| Apple | Watchos | < 26.0 |
| Webkitgtk | Webkitgtk | < 2.50.1 |
| Wpewebkit | Wpe Webkit | < 2.50.1 |
References
- https://support.apple.com/en-us/125108Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125113Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125114Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125115Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125116Release Notes, Vendor Advisory
- http://seclists.org/fulldisclosure/2025/Sep/49Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2025/Sep/53Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2025/Sep/57Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2025/Sep/59Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2025/10/13/4Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2025-43343?
The issue was addressed with improved memory handling. This issue is fixed in Safari 26, 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.
How severe is CVE-2025-43343?
CVE-2025-43343 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.72% probability of exploitation in the next 30 days.
How do I fix CVE-2025-43343?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2025-43343?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST