CVE-2021-30906

HIGHNVD 7.87.8—

7.8

This issue was addressed with improved checks. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, tvOS 15.1, watchOS 8.1, macOS Big Sur 11.6.1. A local attacker may be able to elevate their privileges.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 29.2%
KEV: Not listed

Published

August 24, 2021

Last Modified

November 21, 2024

References (12)

product-security@applehttps://support.apple.com/en-us/HT212867
product-security@applehttps://support.apple.com/en-us/HT212869
product-security@applehttps://support.apple.com/en-us/HT212872
product-security@applehttps://support.apple.com/en-us/HT212874
product-security@applehttps://support.apple.com/en-us/HT212876
product-security@applehttps://support.apple.com/kb/HT212871
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212867
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212869
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212872
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212874
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212876
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT212871

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-30906?

CVE-2021-30906 is a high vulnerability published on August 24, 2021. This issue was addressed with improved checks. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, tvOS 15.1, watchOS 8.1, macOS Big Sur 11.6.1. A local attacker may be able to elevate their privileges.

When was CVE-2021-30906 disclosed?

CVE-2021-30906 was first published in the National Vulnerability Database on August 24, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-30906 actively exploited?

CVE-2021-30906 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 29.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-30906?

CVE-2021-30906 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2021-30906?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-30906, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-30906

📅 Published

🔄 Last Modified

🔗 References (12)