CVE-2021-1821
Medium
Published: 28 October 2021
Published
28 October 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score
0.0039
60.5th percentile
Risk Priority
13
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-1821 is a medium-severity an unspecified weakness vulnerability in Apple Macos. Its CVSS base score is 6.5 (Medium).
Operationally, ranked in the top 39.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-7285
Vulnerability details
A logic issue was addressed with improved state management. This issue is fixed in watchOS 7.6, macOS Big Sur 11.5. Visiting a maliciously crafted webpage may lead to a system denial of service.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
apple
macos
≤ 11.5
apple
watchos
≤ 7.6
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.