CVE-2023-41991: Apple Multiple Products Improper Certificate Validation Vulnerability
CVE-2023-41991 · Severity: critical · CVSS 5.5 · Exploited in the wild · Published 2023-09-25
Apple iOS, iPadOS, macOS, and watchOS contain an improper certificate validation vulnerability. A malicious app can exploit this issue to bypass signature validation, potentially allowing the execution of unsigned or improperly signed code.
Yes. CVE-2023-41991 is known to be exploited in the wild, first recorded on 25 September 2023. Treat it as urgent.
How severe is CVE-2023-41991?
Critical severity, with a CVSS score of 5.5, published 25 September 2023.
Which products and versions are affected?
Apple iOS before 16.7, 17.0; Apple iPadOS before 16.7, 17.0; Apple macOS 13.0 to before 13.6; Apple watchOS before 9.6.3, 10.0.0.
Is there a fix for CVE-2023-41991?
A patch was published on 2023-09-25: Fixed in macOS Ventura 13.6, iOS 16.7, and iPadOS 16.7 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2023-41991 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2023-41991?
Check whether you run Apple Multiple Products. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
Apple iOS before 16.7, 17.0
Apple iPadOS before 16.7, 17.0
Apple macOS 13.0 to before 13.6
Apple watchOS before 9.6.3, 10.0.0
Timeline
2023-09-25: disclosed
2023-09-25: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
2023-09-25: patched: Fixed in macOS Ventura 13.6, iOS 16.7, and iPadOS 16.7
exploited: Apple is aware of reports that this issue may have been actively exploited against versions of iOS before iOS 16.7.