CVE-2021-1871
ENISA EUVD: EUVD-2021-7335 ↗
Exploited in the Wild
✓ Confirmed 0-Day
★ Google Project Zero
Triaged: March 5, 2026
9 articles
EPSS Score
Source: FIRST.org · 2026-05-24
0.94%
probability
This CVE has a 0.94% probability
of being exploited in the next 30 days.
0%
Top 76.5th percentile of all CVEs
100%
CVSS v3.1
Source: NVD9.8
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
Description
Project ZeroUnspecified logic flaw in Webkit
Affected Products
Google Project Zero
Patched
Jan. 26, 2021
Reported by
???
Root Cause Analysis
???
Apple fixes a iOS zero-day vulnerability actively used in attacks
BleepingComputer
Mar 26, 2021
Apple fixes zero-day in iOS and iPadOS 15.0.2 emergency release: Detect and Prioritize Vulnerabilities using VMDR for Mobile Devices
Qualys
Oct 18, 2021
Emergency Apple iOS 15.0.2 update fixes zero-day used in attacks
BleepingComputer
Oct 11, 2021
Apple fixes iOS zero-day used to deploy NSO iPhone spyware
BleepingComputer
Sep 13, 2021
Apple fixes zero-day affecting iPhones and Macs, exploited in the wild
BleepingComputer
Jul 26, 2021
Apple patches new zero-day bug used to hack iPhones and Macs
BleepingComputer
Sep 23, 2021
Apple fixes macOS zero-day bug exploited by Shlayer malware
BleepingComputer
Apr 26, 2021
Qualys Response to CISA Alert: Binding Operational Directive 22-01
Qualys
Nov 09, 2021
Signal Intelligence
Confidence
95%
EPSS
0.94%
CVSS v3.1
9.8
Mentions
9
Last Seen
Nov 09, 2021
CNA Information
Analyst Note
Auto-imported from Google Project Zero — confirmed zero-day by definition.
Triage Info
Decided atMar 05, 2026