CVE-2026-66301

🔶 medium

Summary

Exposure of sensitive information to an unauthorized actor in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information over a network.

CVSS Score

6.5

Medium

EPSS Score

0.7

Exploit Probability

Published Date

2026-08-11

First Seen: 2026-08-12

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 46.6% of all 360,729 vulnerabilities in our database.

#192,724

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Aug 11, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

SSVC data provided by CISA

Last Modified 2026-08-17

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CWE IDs (Weakness Types)

CWE-200

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
microsoft	dynamics_365	Affected	> 9.1 < 9.1.47.06

🔗 References 1

https://msrc.microsoft.com/update-guide/vulnerabilit...

Vendor Advisory Patch

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-65815	⚠️ high	8.8	0.9	Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code ...	2026-08-11
CVE-2026-47647	⛔ critical	9.9	0.4	Improper access control in Microsoft Dynamics 365 allows an authorized attacker to elevate privileges over a network.	2026-06-18
CVE-2026-40371	⚠️ high	8.8	0.6	Improper handling of insufficient permissions or privileges in Microsoft Dynamics 365 (on-premises) allows an authorized...	2026-06-09
CVE-2026-42833	⛔ critical	9.1	0.1	Improper control of generation of code ('code injection') in Microsoft Dynamics 365 (on-premises) allows an authorized a...	2026-05-12
CVE-2026-42898	⛔ critical	9.9	0.1	Improper control of generation of code ('code injection') in Microsoft Dynamics 365 (on-premises) allows an authorized a...	2026-05-12
CVE-2026-32210	⛔ critical	9.3	0.1	Server-side request forgery (ssrf) in Microsoft Dynamics 365 (Online) allows an unauthorized attacker to perform spoofin...	2026-04-23

These CVEs affect the same products