CVE-2020-1063
MediumCVSS 5.4Exploitation Probability (EPSS)
Elevated risk71th percentile - higher than 71% of all known CVEs
Summary
Cross-site scripting vulnerability in Microsoft Dynamics 365 (on-premises) due to improper sanitization of crafted web requests. An authenticated attacker could perform XSS attacks and run scripts in the security context of the current authenticated user.
Risk Assessment
Risk of data theft, unauthorized actions in Dynamics Server (e.g., permission changes, content deletion), and injection of malicious content into the user's browser.
Recommendation
Install the security update that improves sanitization of web requests in Dynamics Server.
Other vulnerabilities in Microsoft Dynamics 365
See all- CVE-2026-47647Critical
Improper access control in Microsoft Dynamics 365 allows an authorized attacker to elevate privileges over a network.
- CVE-2026-66301Medium
Exposure of sensitive information to an unauthorized actor in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information over a network.
- CVE-2026-65815High
Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.
- CVE-2026-40371High
A vulnerability in Microsoft Dynamics 365 (on-premises) related to improper permission handling allows an authorized attacker to elevate privileges over a network.
- CVE-2026-33103Medium
Improper access control in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information locally.
- CVE-2024-43476High
Cross-site Scripting (XSS) vulnerability in Microsoft Dynamics 365 (on-premises). Allows an attacker to inject malicious script into the page.
- CVE-2024-35263Medium
An information disclosure vulnerability in Microsoft Dynamics 365 (On-Premises) allows unauthorized users to access sensitive data. The flaw stems from improper access control management of system resources.
- CVE-2023-21807Medium
Microsoft Dynamics 365 (on-premises) Cross-site Scripting Vulnerability.
- CVE-2023-21573Medium
Microsoft Dynamics 365 (on-premises) Cross-site Scripting Vulnerability.
- CVE-2023-21572Medium
Microsoft Dynamics 365 (on-premises) Cross-site Scripting Vulnerability.
Original NVD description (English source)
A cross site scripting vulnerability exists when Microsoft Dynamics 365 (on-premises) does not properly sanitize a specially crafted web request to an affected Dynamics server. An authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected Dynamics server. The attacker who successfully exploited the vulnerability could then perform cross-site scripting attacks on affected systems and run script in the security context of the current authenticated user. These attacks could allow the attacker to read content that the attacker is not authorized to read, use the victim's identity to take actions within Dynamics Server on behalf of the user, such as change permissions and delete content, and inject malicious content in the browser of the user. The security update addresses the vulnerability by helping to ensure that Dynamics Server properly sanitizes web requests.