Microsoft Dynamics
CVE-2019-1008 — Microsoft Dynamics On-Premise Security Feature Bypass
Executive Summary
A security feature bypass vulnerability exists in Dynamics On Premise. An attacker who exploited the vulnerability could send attachment types that are blocked by the email attachment system. To exploit the vulnerability, an attacker would need to capture and edit the POST request to include a special character in the extension. The update addresses the vulnerability by blocking files with the special character in the file extension.
Overview
5.9
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
ATTACK VECTOR
Network
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
EPSS Score
0.02762
probability of exploitation in the next 30 days
0.8499 percentile - updated 2026-08-14
View on FIRST.org
Affected Products
3 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft Dynamics 365 (on-premises) version 8.2 | 4494412 (Security Update) |
Important | Security Feature Bypass | Maybe |
| Microsoft Dynamics 365 (on-premises) version 9.0 | 4498363 (Security Update) |
Important | Security Feature Bypass | Maybe |
| Microsoft Dynamics CRM 2015 (on-premises) version 7.0 | 4499386 (Security Update) |
Important | Security Feature Bypass | Maybe |
Patches
3 patches
| Article | Type | Restart |
|---|---|---|
4494412 |
Security Update | Maybe |
4498363 |
Security Update | Maybe |
4499386 |
Security Update | Maybe |
Exploits & PoC
No public exploit or PoC has been linked for this CVE yet. When available, references are sourced from public repositories and may be unverified or non-functional — review carefully before use.
Detection Rules
No public Sigma or Nuclei detection rule has been mapped to this CVE yet. Coverage is concentrated on exploited / high-profile vulnerabilities; check SigmaHQ for updates.
Acknowledgments
References
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