CVE-2025-49745 Microsoft Dynamics 365 (on-premises) Cross-site Scripting Vulnerability

Medium 5.4 Published 12 Aug 2025 Updated 13 Feb 2026

An attacker can perform spoofing via cross-site scripting in Microsoft Dynamics 365 on-premises, requiring a patch to mitigate.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2025-49745?

CVE-2025-49745 is a medium-severity cross-site scripting vulnerability in Microsoft Dynamics 365, published on 12 Aug 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Dynamics 365 (on-premises) allows an unauthorized attacker to perform spoofing over a network.

Weakness: CWE-79

Which versions are affected by CVE-2025-49745?

It affects 1 product.

Products include Microsoft Dynamics 365.

How do I fix CVE-2025-49745?

No fix has been published for CVE-2025-49745 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-49745 being exploited?

There is no known exploitation of CVE-2025-49745 in the wild and no public exploit code.

All Microsoft Dynamics 365 vulnerabilities

Sources

Also known as GHSA-93q5-8wfm-rh63.