CVE-2021-30826
HIGHCVSS 7.5/10EPSS 1.21%
Last modified
CVE-2021-30826 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A logic issue was addressed with improved state management. This issue is fixed in iOS 15 and iPadOS 15. EPSS estimates a 1.21% chance of exploitation in the next 30 days.
Description
A logic issue was addressed with improved state management. This issue is fixed in iOS 15 and iPadOS 15. In certain situations, the baseband would fail to enable integrity and ciphering protection.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Ipados | < 15.0 |
| Apple | Iphone Os | < 15.0 |
References
- http://seclists.org/fulldisclosure/2021/Oct/61Mailing List, Third Party Advisory
- https://support.apple.com/en-us/HT212814Release Notes, Vendor Advisory
- https://support.apple.com/kb/HT212807Release Notes, Vendor Advisory
- http://seclists.org/fulldisclosure/2021/Oct/61Mailing List, Third Party Advisory
- https://support.apple.com/en-us/HT212814Release Notes, Vendor Advisory
- https://support.apple.com/kb/HT212807Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-30826?
A logic issue was addressed with improved state management. This issue is fixed in iOS 15 and iPadOS 15. In certain situations, the baseband would fail to enable integrity and ciphering protection.
How severe is CVE-2021-30826?
CVE-2021-30826 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.21% probability of exploitation in the next 30 days.
How do I fix CVE-2021-30826?
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-30826?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST