CVE-2021-30829

HIGHNVD 7.87.8—

7.8

A URI parsing issue was addressed with improved parsing. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local user may be able to execute arbitrary files.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 11.9%
KEV: Not listed

Published

October 19, 2021

Last Modified

November 21, 2024

References (4)

product-security@applehttps://support.apple.com/en-us/HT212804
product-security@applehttps://support.apple.com/en-us/HT212805
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212804
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212805

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-269Improper Privilege Management

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

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Frequently asked(5)

What is CVE-2021-30829?

CVE-2021-30829 is a high vulnerability published on October 19, 2021. A URI parsing issue was addressed with improved parsing. This issue is fixed in Security Update 2021-005 Catalina, macOS Big Sur 11.6. A local user may be able to execute arbitrary files.

When was CVE-2021-30829 disclosed?

CVE-2021-30829 was first published in the National Vulnerability Database on October 19, 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-2021-30829 actively exploited?

CVE-2021-30829 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-30829?

CVE-2021-30829 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2021-30829?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-30829, 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-2021-30829

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-30829?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)