Known exploited vulnerability
CVE-2021-30869
The short answer
CVE-2021-30869 affects Apple iOS and iPadOS and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it, so patch it first.
What it is
A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.
Weakness: CWE-843.
Severity
7.8 high
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Nov 3, 2021
Federal due date Nov 17, 2021
EPSS, next 30 days
4.2%
Higher than 91% of scored CVEs
How it can be exploited
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
iOS and iPadOS, macOS. NVD's record lists the exact affected versions.
References
- support.apple.com/en-us/HT212146 Vendor Advisory
- support.apple.com/en-us/HT212147 Vendor Advisory
- support.apple.com/en-us/HT212824 Vendor Advisory
- support.apple.com/en-us/HT212825 Vendor Advisory
- support.apple.com/en-us/HT212146 Vendor Advisory
- support.apple.com/en-us/HT212147 Vendor Advisory
- support.apple.com/en-us/HT212824 Vendor Advisory
- support.apple.com/en-us/HT212825 Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30869 US Government Resource
Questions
Is CVE-2021-30869 being exploited?
Yes. CISA added CVE-2021-30869 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2021-11-17.
How do I fix CVE-2021-30869?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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