CVE-2021-30826
HIGH
7.5
CVSS Score
Published: October 19, 2021 at 01:11 PM UTC
Updated: June 17, 2026 at 03:50 AM UTC
2 products affected across 1 vendoriPhone OSiPadOS
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Severity
HIGH7.5
Exploit prediction
EPSS 1%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 15
Affected range stops below 15, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
Mailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2021/Oct/61x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://support.apple.com/en-us/HT212814x_refsource_CONFIRMRelease NotesVendor Advisory
Source: [email protected]
https://support.apple.com/kb/HT212807CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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