CVE-2021-30773
MEDIUMCVSS 5.5/10EPSS 1.06%
Last modified
CVE-2021-30773 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An issue in code signature validation was addressed with improved checks. This issue is fixed in iOS 14.7, tvOS 14.7, watchOS 7.6. EPSS estimates a 1.06% chance of exploitation in the next 30 days.
Description
An issue in code signature validation was addressed with improved checks. This issue is fixed in iOS 14.7, tvOS 14.7, watchOS 7.6. A malicious application may be able to bypass code signing checks.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Iphone Os | < 14.7 |
| Apple | Tvos | < 14.7 |
| Apple | Watchos | < 7.6 |
References
- https://support.apple.com/en-us/HT212601Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212604Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212605Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212601Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212604Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212605Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-30773?
An issue in code signature validation was addressed with improved checks. This issue is fixed in iOS 14.7, tvOS 14.7, watchOS 7.6. A malicious application may be able to bypass code signing checks.
How severe is CVE-2021-30773?
CVE-2021-30773 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.06% probability of exploitation in the next 30 days.
How do I fix CVE-2021-30773?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-30773?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST