CVE-2021-30983

ENISA EUVD: EUVD-2021-17900 ↗
Exploited in the Wild ✓ Confirmed 0-Day ★ Google Project Zero
Triaged: March 5, 2026 2 articles Published: 2021-08-24
VulnLookup ↗ NVD ↗ EUVD ↗ MITRE ↗ Advisory ↗ P0 Sheet ↗ CISA KEV ↗

EPSS Score

Source: FIRST.org · 2026-05-23
0.5%
probability
This CVE has a 0.5% probability of being exploited in the next 30 days.
0% Top 66.2th 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 buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 15.2 and iPadOS 15.2. An application may be able to execute arbitrary code with kernel privileges.

Affected Products

Apple
iOS and iPadOS
unspecified

Attack Intelligence

Google Project Zero

Patched
Dec. 13, 2021
Reported by
Pangu via Tianfu Cup
Root Cause Analysis
???

Signal Intelligence

Confidenceⓘ
95%
EPSS 0.5%
CVSS v3.1 7.8
Mentions 2

CNA Information

CNA Assigner
apple

Analyst Note

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

Triage Info

Decided atMar 05, 2026
Published DateAug 24, 2021