Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-1591

16
FAUCET Score

CVE-2020-1591 is a Cross-Site Scripting (XSS) vulnerability affecting on-premises deployments of Microsoft Dynamics 365 resulting from the improper sanitization of web requests. Rated as Medium severity with a CVSS score of 5.4, this flaw allows an authenticated attacker to execute arbitrary scripts within a victim's browser session, potentially leading to unauthorized data access or actions performed on the user's behalf. Currently, there is no evidence of active exploitation or publicly available exploit code, and the issue has generated limited community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
9.0CPE matchmatch criteria
cpe:2.3:a:microsoft:dynamics_365:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.51%
Probability of exploitation in next 30 days
EPSS Percentile
71.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0151 is in the 96th percentile among its peer group of 15,239 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

The average CVE in this peer group has 0.0 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 9.0
View patch

Vendor Advisories (1)

microsoft2020-Aug/CVE-2020-1591Important

Microsoft Dynamics 365 (On-Premise) Cross Site Scripting Vulnerability

Aug 11, 2020

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2020-1591
PatchVendor Advisory