EUVD-2026-73294
GHSA-xwmw-4qgg-5h34
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-accessible injection requiring only low-privilege auth (PR:L) with no interaction; scope unchanged and full triad impact aligns with server-side code execution.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Improper control of generation of code ('code injection') in Microsoft Dynamics 365 allows an authorized attacker to execute code over a network.
AnalysisAI
Remote code execution in Microsoft Dynamics 365 Customer Engagement V9.1 (versions below 9.1.0048.0004) is achievable by authenticated network attackers through a code injection vulnerability (CWE-94). An attacker holding a low-privilege account can submit a crafted request that causes the server to generate and execute attacker-controlled code, resulting in full confidentiality, integrity, and availability compromise of the affected instance. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid low-privilege user account in the target Microsoft Dynamics 365 Customer Engagement V9.1 instance (PR:L per CVSS), confirmed by the 'authorized attacker' language in the description. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score is supported by the combination of network accessibility, low attack complexity, and full triad impact - even a mid-sized municipal IT team in tczew should treat this as urgent, since low-privilege credentials (the only prerequisite) are routinely held by hundreds of end users in typical Dynamics 365 deployments. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary remediation is to update Microsoft Dynamics 365 Customer Engagement V9.1 to version 9.1.0048.0004 or later, as documented in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77908. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all Dynamics 365 Customer Engagement V9.1 deployments to identify instances running versions below 9.1.0048.0004 and map which systems have user accounts with access privileges. …
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Same weakness CWE-94 – Code Injection
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External POC / Exploit Code
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