← Global Threat Landscape
CVE-2021-1789
CWE-843
Critical
96.2
RPSRPS range: 0–105; KEV-listed vulnerabilities can receive an exploitation amplifier.
Description
A type confusion issue was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4 and iPadOS 14.4, Safari 14.0.3. Processing maliciously crafted web content may lead to arbitrary code execution.
Source: NVD
Signals
- CVSS
- 8.8
- High · v3.1
- EPSS
- 13.97%
- Probability of exploitation in the next 30 days (FIRST)
- CISA KEV
- In CISA KEV since May 2022
- Fix commit
- No known fix commit
- Sources: MoreFixes, FreshFixes
- Weakness
- CWE-843
- Published
- 2 Apr 2021
- Last modified 23 Oct 2025
How to read these signals: RPS · EPSS · CISA KEV · Data sources
Get this score from the API
curl -H "Authorization: Bearer dsec_live_xxxxxxxx" \
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Data as of 7 Oct 2026, 05:16 UK time