Overview
Apple iOS, iPadOS, macOS, and watchOS contain an improper certificate validation vulnerability that can allow a malicious app to bypass signature validation.
https://support.apple.com/en-us/HT213926, https://support.apple.com/en-us/HT213927, https://support.apple.com/en-us/HT213928, https://support.apple.com/en-us/HT213929, https://support.apple.com/en-us/HT213931 ; https://nvd.nist.gov/vuln/detail/CVE-2023-41991
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2023-41991 |
| Vendor / Product | Apple — Multiple Products |
| NVD Published | 2023-09-21 |
| NVD Last Modified | 2025-11-05 |
| CVSS 3.1 Score | 5.5 |
| CVSS 3.1 Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
| Severity | MEDIUM |
| CWE | CWE-295 |
| CISA KEV Added | 2023-09-25 |
| CISA KEV Deadline | 2023-10-16 |
| Known Ransomware Use | No |
CVSS 3.1 Breakdown
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Required Action
CISA BOD 22-01 Deadline: 2023-10-16.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Timeline
| Date | Event |
|---|---|
| 2023-09-25 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2023-10-16 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2023-41991 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |