Is CVE-2021-30869 being actively exploited?

Yes. CVE-2021-30869 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on November 3, 2021.

What is the CVSS score for CVE-2021-30869?

CVE-2021-30869 has a CVSS 3.1 base score of 7.8 (HIGH).

CVE-2021-30869

HIGH · CVSS 7.8CISA KEV: actively exploitedEPSS 4.1%EU EUVD: exploited

A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.

Key facts

CVSS score: 7.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-843
EPSS score: 4.1% (91th percentile)
In CISA KEV: Yes, added November 3, 2021
In EU EUVD: Yes (EUVD-2021-17786)
Published: August 24, 2021
NVD last modified: June 17, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Apple iOS, iPadOS, and macOS Type Confusion Vulnerability

Added to the KEV catalog on November 3, 2021; federal remediation due November 17, 2021.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2021-17786 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 21, 2025.

View on the EU Vulnerability Database

Affected products

apple / ipados
apple / iphone os
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / mac os x
apple / macos

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Apple macOS 11 Big Sur: Contacts - Apple Inc. - Common Criteria CCEVS-VR-VID-11243-2022 - archived

References

https://support.apple.com/en-us/HT212146(Vendor Advisory)
https://support.apple.com/en-us/HT212147(Vendor Advisory)
https://support.apple.com/en-us/HT212824(Vendor Advisory)
https://support.apple.com/en-us/HT212825(Vendor Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30869(US Government Resource)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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