CVE-2021-30997 Information disclosure in iOS and iPadOS
An attacker can recover plaintext contents of S/MIME-encrypted emails due to improper MIME part handling in iOS Mail.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-30997?
CVE-2021-30997 is a high-severity vulnerability in Apple Ipados, published on 24 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A S/MIME issue existed in the handling of encrypted email. This issue was addressed by not automatically loading some MIME parts. This issue is fixed in iOS 15.2 and iPadOS 15.2. An attacker may be able to recover plaintext contents of an S/MIME-encrypted e-mail.
Weakness: CWE-312
Which versions are affected by CVE-2021-30997?
It affects 2 products.
Products include Apple Ipados, Apple Iphone Os.
How do I fix CVE-2021-30997?
No fix has been published for CVE-2021-30997 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-30997 being exploited?
There is no known exploitation of CVE-2021-30997 in the wild and no public exploit code.
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