Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV L H L N U H H H 7.0 .0017 6.5 —
AFFECTED Product Versions Fixed Microsoft Defender for Endpoint for Mac 101.0.0 – —
TIMELINE Jun 19 Reserved by microsoft Jul 14 Published (CNA: microsoft) Jul 22 RESCORED — CVE-2026-56178 (Microsoft Defender for Endpoint for Mac). CVSS 5.5 → 7 (NVD).
Time-of-check time-of-use (toctou) race condition in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally.
| Date | Event | Detail |
|---|---|---|
| June 19, 2026 | Reserved | Reserved by microsoft |
| July 14, 2026 | Published | Published (CNA: microsoft) |
| July 22, 2026 | RESCORED | RESCORED — CVE-2026-56178 (Microsoft Defender for Endpoint for Mac). CVSS 5.5 → 7 (NVD). |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| Microsoft | Microsoft Defender for Endpoint for Mac | — | 101.0.0 | — |
Authoritative record: CVE-2026-56178 at cve.org
Vendors: microsoft
Weaknesses: CWE-367
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-56178 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.