VulnerabilityAnalyzed
CVE-2026-28858
A buffer overflow was addressed with improved bounds checking.
CRITICAL 9.8EPSS 0.53%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.53% probability · 44th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- apple/ipados · apple/iphone os
- Source
- product-security@apple.com
References
- https://support.apple.com/en-us/126792Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.