CVE-2021-30657
Apple macOS Unspecified Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply updates per vendor instructions.
CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2021-30657
Description
A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. A malicious application may bypass Gatekeeper checks. Apple is aware of a report that this issue may have been actively exploited..
Severity
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NExploitation Context
as of October 14, 2026- CISA added CVE-2021-30657 to the KEV catalog 56 days after its CVE record was published.
- It is one of 95 Apple entries in the CISA KEV catalog, and one of 23 added in 2021.
- Its current EPSS score (68.5%) is higher than that of 57% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Apple | Apple macOS | unspecified to <11.3 |
| Apple | Apple macOS | unspecified to <2021 |
References
2 LinksRecord Details
More from Apple
Apple macOS Out-of-Bounds Write Vulnerability
Apple macOS Unspecified Vulnerability
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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.