CVE-2025-43421
MEDIUMCVSS 4.3/10EPSS 0.56%
Last modified
CVE-2025-43421 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Multiple issues were addressed by disabling array allocation sinking. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1. EPSS estimates a 0.56% chance of exploitation in the next 30 days.
Description
Multiple issues were addressed by disabling array allocation sinking. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected process crash.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Safari | < 26.1 |
| Apple | Ipados | < 26.1 |
| Apple | Iphone Os | < 26.1 |
| Apple | Visionos | < 26.1 |
References
- https://support.apple.com/en-us/125632Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125638Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125640Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2025-43421?
Multiple issues were addressed by disabling array allocation sinking. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected process crash.
How severe is CVE-2025-43421?
CVE-2025-43421 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.
How do I fix CVE-2025-43421?
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2025-43421?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST