CVE-2020-0656Network attack vector

Stored XSS via unescaped booking display name

Published Jan 14, 2020 · Updated Aug 4, 2024

Stored XSS in Microsoft Dynamics 365 Field Service on-premises 7 allows remote authenticated users to run script in another user's browser. The Schedule Board renders a Booking Setup Metadata display name without HTML escaping, preserving injected markup for later viewers. Low-privileged access is required to plant the value, and another user must open the affected Schedule Board; resulting script can read or alter data within that user's session.

CVSS severity5.4
Medium
EPSS probability1.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in Microsoft Dynamics 365 Field Service on-premises 7 allows remote authenticated users to run script in another user's browser. The Schedule Board renders a Booking Setup Metadata display name without HTML escaping, preserving injected markup for later viewers. Low-privileged access is required to plant the value, and another user must open the affected Schedule Board; resulting script can read or alter data within that user's session.

The record

CVE
CVE-2020-0656
Published
Jan 14, 2020
Updated
Aug 4, 2024
Vendor
Microsoft
Product
Dynamics 365 Field Service (on-premises)
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 14, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Dynamics 365 Field Service (on-premises)version=unspecified

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo