SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-1872

A logic issue was addressed with improved state management.

MEDIUM 4.3EPSS 1.04%

Does this matter?

Lower severity and a low EPSS score (1.04%). Track it; it rarely justifies an emergency change on its own.

Description

A logic issue was addressed with improved state management. This issue is fixed in iOS 14.5 and iPadOS 14.5, watchOS 7.4, macOS Big Sur 11.3. Muting a CallKit call while ringing may not result in mute being enabled.

CVSS 3.1
4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS
1.04% probability · 64th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
apple/ipados · apple/iphone os · apple/macos
Source
product-security@apple.com
EPSS trend
0%3%5%26 October 2026: 1.04%26 October 202626 October 2026

EPSS 1.0% 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.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.