CVE-2023-41991
Medium 5.5 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Apple Multiple Products Improper Certificate Validation Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
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.
Metrics
- CVSS 3.1
-
5.5 (MEDIUM)
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N - EPSS — exploit probability
- 13% (percentile: 96) as of 2 November 2026
- CWE
- CWE-295
Affected products
apple: ipados; apple: iphone os; apple: macos
References
- https://support.apple.com/en-us/HT213927 Vendor Advisory
- https://support.apple.com/en-us/HT213931 Vendor Advisory
- https://support.apple.com/en-us/HT213927 Vendor Advisory
- https://support.apple.com/en-us/HT213931 Vendor Advisory
- https://support.apple.com/kb/HT213927 Vendor Advisory
- https://support.apple.com/kb/HT213931 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023… US Government Resource