CVE-2022-26721

HIGHNVD 7.87.8—

7.8

A memory initialization issue was addressed. This issue is fixed in Security Update 2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. A malicious application may be able to gain root privileges.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 59.2%
KEV: Not listed

Published

May 26, 2022

Last Modified

November 21, 2024

References (6)

product-security@applehttps://support.apple.com/en-us/HT213255
product-security@applehttps://support.apple.com/en-us/HT213256
product-security@applehttps://support.apple.com/en-us/HT213257
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT213255
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT213256
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT213257

Weakness Classification(1)

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

CWE-665

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.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
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2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 21:29 UTCEG score recompute

Frequently asked(5)

What is CVE-2022-26721?

CVE-2022-26721 is a high vulnerability published on May 26, 2022. A memory initialization issue was addressed. This issue is fixed in Security Update 2022-004 Catalina, macOS Monterey 12.4, macOS Big Sur 11.6.6. A malicious application may be able to gain root privileges.

When was CVE-2022-26721 disclosed?

CVE-2022-26721 was first published in the National Vulnerability Database on May 26, 2022, 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-2022-26721 actively exploited?

CVE-2022-26721 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 59.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-26721?

CVE-2022-26721 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2022-26721?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-26721, 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-2022-26721

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-26721?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (6)

Frequently asked(5)

Related CVEs(same CWE)