CVE-2026-40364HIGH 8.4EPSS p90.1%

CVE-2026-40364CVE-2026-40364

Description

Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker to execute code locally.

Scoring

CVSS 3.18.4 (HIGH)
VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS4.42% probability of exploitation · percentile 90.1% · 2026-06-19T12:03:05Z
Published2026-05-12
Last modified2026-05-19

Underlying weaknesses· 3

CWE-122CWE-843CWE-908

References

  1. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40364

3

TypeTargetConfidenceTier
WeaknessHeap-based Buffer Overflowcwe-1220%live
WeaknessAccess of Resource Using Incompatible Type ('Type Confusion')cwe-8430%live
WeaknessUse of Uninitialized Resourcecwe-9080%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.