CVE-2021-1870

ENISA EUVD: EUVD-2021-7334 ↗
Exploited in the Wild ✓ Confirmed 0-Day ★ Google Project Zero
Triaged: March 5, 2026 9 articles Published: 2021-04-02
VulnLookup ↗ NVD ↗ EUVD ↗ MITRE ↗ Advisory ↗ P0 Sheet ↗ CISA KEV ↗

EPSS Score

Source: FIRST.org · 2026-05-23
1.15%
probability
This CVE has a 1.15% probability of being exploited in the next 30 days.
0% Top 78.7th percentile of all CVEs 100%

CVSS v3.1

Source: VulnerabilityLookup (CIRCL)
9.8
CRITICAL
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2 (legacy)

7.5
HIGH
Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
AV:N/AC:L/Au:N/C:P/I:P/A:P

Description

VulnerabilityLookup (CNA)
A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

Affected Products

Apple
iOS and iPadOS
unspecified
Apple
macOS
unspecified

Google Project Zero

Patched
Jan. 26, 2021
Reported by
???
Root Cause Analysis
???

Signal Intelligence

Confidenceⓘ
95%
EPSS 1.15%
CVSS v3.1 9.8
Mentions 9
Last Seen Nov 09, 2021

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 DateApr 02, 2021