How to check if you are exposed to CVE-2021-30869
- Find every Apple iOS, iPadOS, and macOS system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
- Compare each version with the fixed versions in the vendor advisory. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
- Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2021-30869.
US federal agencies had to fix this by 2021-11-17. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.
Affected versions
Versions the National Vulnerability Database lists as vulnerable to CVE-2021-30869. Check the vendor advisory for the exact fixed builds before you sign anything off.
| Product | Vulnerable versions |
|---|---|
| Apple Ipados | before 14.4 |
| Apple Macos | from 11.0 before 11.2 |
| Apple Iphone OS | from 12.0 before 12.5.5; from 14.0 before 14.4 |
| Apple MAC OS X | from 10.14 up to and including 10.14.6; from 10.15 up to and including 10.15.6; 10.14.6-security_update_2019-001; 10.14.6-security_update_2019-002; 10.14.6-security_update_2019-004; 10.14.6-security_update_2019-005 and 19 more |
Timeline
- · Published in the National Vulnerability Database
- · Added to CISA's Known Exploited Vulnerabilities catalog, 71 days after it was published
- · Fix-by date for US federal agencies, passed 1,810 days ago
Weakness type
More exploited Apple vulnerabilities
CISA lists 95 exploited Apple vulnerabilities. The closest matches:
- CVE-2025-43300Apple iOS, iPadOS, and macOS Out-of-Bounds Write VulnerabilityAdded 2025-08-21
- CVE-2023-41064Apple iOS, iPadOS, and macOS ImageIO Buffer Overflow VulnerabilityAdded 2023-09-11
- CVE-2023-28206Apple iOS, iPadOS, and macOS IOSurfaceAccelerator Out-of-Bounds Write VulnerabilityAdded 2023-04-10
- CVE-2021-30900Apple iOS, iPadOS, and macOS Out-of-Bounds Write VulnerabilityAdded 2023-03-30
- CVE-2022-32917Apple iOS, iPadOS, and macOS Remote Code Execution VulnerabilityAdded 2022-09-14
- CVE-2020-9934Apple iOS, iPadOS, and macOS Input Validation VulnerabilityAdded 2022-09-08
- CVE-2022-22620Apple iOS, iPadOS, and macOS Webkit Use-After-Free VulnerabilityAdded 2022-02-11
- CVE-2021-30858Apple iOS, iPadOS, macOS Use-After-Free VulnerabilityAdded 2021-11-03
Keep going
Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.