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CVE-2018-8609

32
FAUCET Score

CVE-2018-8609 is a remote code execution vulnerability affecting Microsoft Dynamics 365 (on-premises) version 8, stemming from improper sanitization of web requests. With a CVSS score of 8.8 (HIGH), this vulnerability allows an authenticated attacker to execute arbitrary code with low attack complexity and no user interaction, leading to high impact on confidentiality, integrity, and availability. While no public exploit code (Metasploit, Nuclei, ExploitDB) is available, the vulnerability has garnered significant community discussion and media coverage, indicating awareness despite not being listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.0, < 8.2.3.0003CPE matchmatch criteria
cpe:2.3:a:microsoft:dynamics_365:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
9.90%
Probability of exploitation in next 30 days
EPSS Percentile
95.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0990 is in the 94th percentile among its peer group of 17,822 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft Dynamics 365 (on-premises) version 8
View patch

Vendor Advisories (1)

microsoft2018-Nov/CVE-2018-8609Critical

Microsoft Dynamics 365 (on-premises) Remote Code Execution Vulnerability

Nov 13, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8609
PatchVendor Advisory
securityfocus.com / bid/105894
Third Party AdvisoryVDB Entry