CVE-2021-30869

ENISA EUVD: EUVD-2021-17786 ↗
Exploited in the Wild ✓ Confirmed 0-Day ★ Google Project Zero
Triaged: March 5, 2026 6 articles Published: 2021-08-24
VulnLookup ↗ NVD ↗ EUVD ↗ MITRE ↗ Advisory ↗ P0 Sheet ↗ CISA KEV ↗

EPSS Score

Source: FIRST.org · 2026-05-23
1.72%
probability
This CVE has a 1.72% probability of being exploited in the next 30 days.
0% Top 82.6th percentile of all CVEs 100%

CVSS v3.1

Source: VulnerabilityLookup (CIRCL)
7.8
HIGH
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2 (legacy)

9.3
HIGH
Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
AV:N/AC:M/Au:N/C:C/I:C/A:C

Description

VulnerabilityLookup (CNA)
A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.

Affected Products

Apple
iOS and iPadOS
unspecified
Apple
macOS
unspecified
Apple
macOS
unspecified
Apple
macOS
unspecified

Attack Intelligence

Google Project Zero

Patched
Sept. 23, 2021
Reported by
Erye Hernandez of Google Threat Analysis Group, Clément Lecigne of Google Threat Analysis Group, and Ian Beer of Google Project Zero
Root Cause Analysis
???

Signal Intelligence

Confidenceⓘ
95%
EPSS 1.72%
CVSS v3.1 7.8
Mentions 6
Last Seen Nov 09, 2021

CNA Information

CNA Assigner
apple

Analyst Note

Auto-imported from Google Project Zero — confirmed zero-day by definition.

Threat Actors 2

BRONZE HIGHLAND
apt_group Information theft and espionage 🇨🇳 CN
WildPressure
apt_group Information theft and espionage UNKNOWN

Triage Info

Decided atMar 05, 2026
Published DateAug 24, 2021