CVE-2025-43366

MEDIUMNVD 5.55.5—

5.5

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Tahoe 26. An app may be able to disclose coprocessor memory.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 9.6%
KEV: Not listed

Published

September 15, 2025

Last Modified

November 3, 2025

References (2)

product-security@applehttps://support.apple.com/en-us/125110
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2025/Sep/53

Weakness Classification(1)

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

CWE-125Out-of-bounds Read

Data Freshness Timeline

(refreshed 8× in last 7d / 28× 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.

2026-06-16 17:52 UTCEPSS rescore
2026-06-16 17:52 UTCEPSS rescore
2026-06-14 23:17 UTCEPSS rescore
2026-06-13 23:00 UTCEPSS rescore
2026-06-12 23:11 UTCEPSS rescore
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2026-06-10 22:18 UTCEPSS rescore
2026-06-10 13:22 UTCEPSS rescore
2026-06-08 14:16 UTCEPSS rescore
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2026-06-07 15:24 UTCEPSS rescore
2026-06-06 13:47 UTCEPSS rescore
2026-06-06 13:47 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 06:10 UTCEPSS rescore
2026-06-05 06:10 UTCEPSS rescore
2026-06-04 13:12 UTCEPSS rescore
2026-06-04 13:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 00:16 UTCEPSS rescore

Show 3 more

2026-05-29 22:43 UTCEG score recompute
2026-05-29 22:43 UTCGHSA enrichment
2026-05-29 13:44 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-43366?

CVE-2025-43366 is a medium vulnerability published on September 15, 2025. An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Tahoe 26. An app may be able to disclose coprocessor memory.

When was CVE-2025-43366 disclosed?

CVE-2025-43366 was first published in the National Vulnerability Database on September 15, 2025, with the most recent update on November 3, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-43366 actively exploited?

CVE-2025-43366 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-43366?

CVE-2025-43366 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2025-43366?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-43366, 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

Explore the affected products and dependency analysis for CVE-2025-43366

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CVE-2025-43366

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-43366?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)