CVE-2020-9978
An attacker in a privileged network position may be able to unexpectedly alter application state.
Does this matter?
Lower severity and a low EPSS score (0.54%). Track it; it rarely justifies an emergency change on its own.
Description
This issue was addressed with improved setting propagation. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, watchOS 7.0, iOS 14.0 and iPadOS 14.0. An attacker in a privileged network position may be able to unexpectedly alter application state.
- CVSS 3.1
- 4.5 MEDIUMCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.54% probability · 45th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- apple/ipados · apple/iphone os · apple/mac os x · apple/macos · apple/watchos
- Source
- product-security@apple.com
EPSS 0.5% 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/en-us/HT211843Vendor Advisory
- https://support.apple.com/en-us/HT211844Vendor Advisory
- https://support.apple.com/en-us/HT211850Vendor Advisory
- https://support.apple.com/en-us/HT211931Vendor Advisory
- https://support.apple.com/en-us/HT212011Vendor Advisory
- https://support.apple.com/en-us/HT211843Vendor Advisory
- https://support.apple.com/en-us/HT211844Vendor Advisory
- https://support.apple.com/en-us/HT211850Vendor Advisory
- https://support.apple.com/en-us/HT211931Vendor Advisory
- https://support.apple.com/en-us/HT212011Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.