Known exploited vulnerability
CVE-2020-27950
The short answer
CVE-2020-27950 affects Apple watchOS and is rated medium (CVSS 5.5). 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 memory initialization issue was addressed. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. A malicious application may be able to disclose kernel memory.
Weakness: CWE-665.
Severity
5.5 medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Exploited (CISA KEV)
Yes, since Nov 3, 2021
Federal due date May 3, 2022
EPSS, next 30 days
17%
Higher than 97% 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
- None
- Availability impact
- None
What CISA says to do
Apply updates per vendor instructions.
Affected products
watchOS, iOS and iPadOS, macOS. NVD's record lists the exact affected versions.
References
- support.apple.com/en-us/HT211928 Vendor Advisory
- support.apple.com/en-us/HT211929 Vendor Advisory
- support.apple.com/en-us/HT211931 Vendor Advisory
- support.apple.com/en-us/HT211940 Vendor Advisory
- support.apple.com/en-us/HT211944 Vendor Advisory
- support.apple.com/en-us/HT211945 Vendor Advisory
- support.apple.com/en-us/HT211946 Vendor Advisory
- support.apple.com/en-us/HT211947 Vendor Advisory
- support.apple.com/en-us/HT211928 Vendor Advisory
- support.apple.com/en-us/HT211929 Vendor Advisory
- support.apple.com/en-us/HT211931 Vendor Advisory
- support.apple.com/en-us/HT211940 Vendor Advisory
Questions
Is CVE-2020-27950 being exploited?
Yes. CISA added CVE-2020-27950 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2022-05-03.
How do I fix CVE-2020-27950?
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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