PT-2026-47973 · Microsoft · Exchange Server

Artemy Tsetsersky + 10 · CVE-2026-45501 · Published 2026-06-09 · Updated 2026-06-09

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:L/Au:S/C:C/I:N/A:N

Name of the Vulnerable Software and Affected Versions Microsoft Exchange Server (affected versions not specified)

Description Improper neutralization of input during web page generation leads to cross-site scripting (XSS), a condition where malicious scripts are injected into trusted websites. Additionally, a server-side request forgery (SSRF) issue exists, which occurs when a server is tricked into making unintended requests to internal or external resources. These flaws allow attackers to perform spoofing over a network.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

SSRF

Weakness Enumeration

CWE-79

CWE-918

Related Identifiers

BDU:2026-08569

CVE-2026-45501

Affected Products

Exchange Server

References · 5

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45501 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-08569 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-45501 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-45501 · Security Note
• https://twitter.com/windowsforum/status/2064479430995493368 · Twitter Post