CVE-2023-41991 Apple Multiple Products Improper Certificate Validation
A malicious app can bypass signature validation on Apple mobile operating systems, allowing unauthorized code execution or installation.
- Exploited in the wild
- Since 25 Sep 2023
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-41991?
CVE-2023-41991 is a medium-severity vulnerability in Apple Ipados, published on 21 Sep 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-295
Which versions are affected by CVE-2023-41991?
It affects 3 products.
Products include Apple Ipados, Apple Iphone Os, Apple Macos.
How do I fix CVE-2023-41991?
No fix has been published for CVE-2023-41991 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 16 Oct 2023.
Is CVE-2023-41991 being exploited?
Yes. Attackers have exploited CVE-2023-41991 in the wild since at least 25 Sep 2023.
Public exploit code: 3 proofs of concept on GitHub.
Other vulnerabilities in Apple Ipados
- CVE-2025-43300 Apple iOS, iPadOS, and macOS Out-of-Bounds Write
- CVE-2025-24201 Apple Multiple Products WebKit Out-of-Bounds Write
- CVE-2025-24085 Apple Multiple Products Use-After-Free
- CVE-2025-31200 Apple Multiple Products Memory Corruption
- CVE-2025-31201 Apple Multiple Products Arbitrary Read and Write
Sources
Also known as GHSA-fj3m-2r8f-m4x9.