5.5
Medium
Exploited
CVE-2023-41991 Apple Multiple Products Improper Certificate Validation Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Ransomware campaigns
Not observed so far
Weakness
CWE-295
Description
A certificate validation issue was addressed. This issue is fixed in macOS Ventura 13.6, iOS 16.7 and iPadOS 16.7. A malicious app may be able to bypass signature validation. Apple is aware of a report that this issue may have been actively exploited against versions of iOS before iOS 16.7.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| iOS and iPadOS 16.7 | earliest → < 16.7 | 16.7 |
| macOS 13.6 | earliest → < 13.6 | 13.6 |
References
- support.apple.com support.apple.com
- support.apple.com support.apple.com
Timeline
- Published
- Added to the KEV catalogue
- Last modified
Other CVEs of iOS and iPadOS
The 2049 CVEs of iOS and iPadOS →
CVE-2026-86925
An authorization issue was addressed with improved state management
5.5
Medium
CVE-2026-84627
A buffer overflow was addressed with improved bounds checking
7.8
High
CVE-2026-86972
A buffer overflow was addressed with improved size validation
7.8
High
CVE-2026-113912
An out-of-bounds access issue was addressed with improved bounds checking
7.1
High