CVE-2020-3853
A malicious application may be able to execute arbitrary code with system privileges.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1, watchOS 6.1.2. A malicious application may be able to execute arbitrary code with system 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
- 1.34% probability · 71th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-843
- Affected
- apple/ipados · apple/iphone os · apple/mac os x · apple/tvos · apple/watchos
- Source
- product-security@apple.com
EPSS 1.3% since 26 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
- https://support.apple.com/HT210918Release Notes, Vendor Advisory
- https://support.apple.com/HT210919Release Notes, Vendor Advisory
- https://support.apple.com/HT210920Release Notes, Vendor Advisory
- https://support.apple.com/HT210921Release Notes, Vendor Advisory
- https://support.apple.com/HT210918Release Notes, Vendor Advisory
- https://support.apple.com/HT210919Release Notes, Vendor Advisory
- https://support.apple.com/HT210920Release Notes, Vendor Advisory
- https://support.apple.com/HT210921Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.