Summary
| Parameter | Value |
|---|---|
| CVE ID | CVE-2026-28858 |
| Alert Source | GitHub Advisory - Critical Vulnerability |
| CVE Publication Year | 2026 |
| Date Published | 2026-03-25 |
| Vendor | Apple |
| Product | iOS |
| CVSS Score | 9.8 (critical) |
| EPSS Score | 0.0% (percentile: 15%) |
| CISA KEV | No |
| Ransomware | Not confirmed |
Vulnerability Description
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.4 and iPadOS 26.4. A remote user may be able to cause unexpected system termination or corrupt kernel memory.
Required Actions
Apply vendor patches or mitigations as soon as available.
Who Is Affected?
This vulnerability affects iOS by Apple. Check if your organization uses this software and requires updates.
Sources
Need help securing your systems? nFlo team offers vulnerability management and 24/7 SOC services. Contact us.
How can nFlo help?
If your organization uses products affected by this vulnerability, contact us. We can help with:
- Verifying whether your systems are at risk
- Implementing patches and risk mitigation
- Monitoring for exploitation attempts in your environment
Useful resources:
