CVE DATABASE / CVE-2023-41991
CVE-2023-41991
Apple Multiple Products Improper Certificate Validation Vulnerability
Confirmed exploited in the wild. Added 2023-09-25.
Federal remediation due 2023-10-16.
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Summary
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.
CVSS 3.1 breakdown
| Base score | 5.5 (MEDIUM) |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
| Attack vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | REQUIRED |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity | HIGH |
| Availability | NONE |
Weakness type (CWE)
Affected products
Use our free CVE Lookup tool for the latest NVD record, or browse the full CISA KEV catalog.
References
- https://support.apple.com/en-us/HT213927
- https://support.apple.com/en-us/HT213931
- https://support.apple.com/kb/HT213927
- https://support.apple.com/kb/HT213931
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-41991
Data: NIST NVD + CISA KEV. NVD last modified 2025-11-05. Always verify against the vendor advisory before acting.