May 2026 Patch TuesdayKB5086069Normal patch window

Microsoft · KB5086069

Linked CVE review

Deploy Microsoft Microsoft Dynamics security update KB5086069

Linked CVEs
1
Confirmed exploited
0
PoC or lab evidence
0
Maximum CVSS
7.8
Evidence is kept separate

Confirmed exploitation, public exploit material, EPSS probability and CVSS severity answer different questions. “No confirmation recorded” means the checked sources do not currently confirm exploitation. It is not proof that exploitation has not occurred.

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1 of 1 linked CVEs shown
Confirmed exploitedCVSS above 9.0
CVE and descriptionSeverityExploit realityForecast and accessRemediation
CVE-2026-40417 Scheduled assessment
Microsoft Dynamics 365 Business Central Elevation of Privilege Vulnerability

Weak authentication in Dynamics Business Central allows an authorized attacker to elevate privileges locally.

7.8 · CVSS 3.1 · HighSource: CNANo confirmation recordedNo CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.None recordedNo exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.EPSS: 0.30% · 20.6th percentileForecast date: 2026-10-07LOCAL · LOW complexity · LOW privileges · NONE user interactionWithin 7 daysHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.Awaiting fix. No fixed version is explicitly recorded in the structured CVE data.