← Global Threat Landscape
CVE-2021-1871
Critical
101.1
RPSRPS range: 0–105; KEV-listed vulnerabilities can receive an exploitation amplifier.
Description
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..
Source: NVD
Signals
- CVSS
- 9.8
- Critical · v3.1
- EPSS
- 7.00%
- Probability of exploitation in the next 30 days (FIRST)
- CISA KEV
- In CISA KEV since Nov 2021
- Fix commit
- No known fix commit
- Sources: MoreFixes, FreshFixes
- Weakness
- Not mapped
- Published
- 2 Apr 2021
- Last modified 23 Oct 2025
How to read these signals: RPS · EPSS · CISA KEV · Data sources
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Data as of 7 Oct 2026, 05:16 UK time