CVE-2020-9949
A use after free issue was addressed with improved memory management.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0, macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra, tvOS 14.0. An application may be able to execute arbitrary code with kernel privileges.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.50% probability · 74th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- apple/ipados · apple/iphone os · apple/mac os x · apple/tvos · apple/watchos
- Source
- product-security@apple.com
EPSS 1.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
- https://support.apple.com/en-us/HT211289Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211843Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211844Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211850Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211931Release Notes, Vendor Advisory
- http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
- https://support.apple.com/en-us/HT211289Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211843Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211844Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211850Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT211931Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.