CVE-2021-1833

HIGHNVD 7.87.8—

7.8

This issue was addressed with improved checks. This issue is fixed in iOS 14.5 and iPadOS 14.5. An application may be able to gain elevated privileges.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 49.1%
KEV: Not listed

Published

September 8, 2021

Last Modified

November 21, 2024

References (2)

product-security@applehttps://support.apple.com/en-us/HT212317
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212317

Data Freshness Timeline

(refreshed 13× 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
2026-06-08 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
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 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-2021-1833?

CVE-2021-1833 is a high vulnerability published on September 8, 2021. This issue was addressed with improved checks. This issue is fixed in iOS 14.5 and iPadOS 14.5. An application may be able to gain elevated privileges.

When was CVE-2021-1833 disclosed?

CVE-2021-1833 was first published in the National Vulnerability Database on September 8, 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-2021-1833 actively exploited?

CVE-2021-1833 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 49.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-1833?

CVE-2021-1833 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2021-1833?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-1833, 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-2021-1833

📅 Published

🔄 Last Modified

🔗 References (2)