CVE-2026-62914

Analyzed Analyzed - Analysis Complete

Stored XSS in Microsoft Exchange Server

Publication date: 2026-08-11

Last updated on: 2026-08-13

Assigner: Microsoft Corporation

Description

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an authorized attacker to perform spoofing over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-11

Last Modified

2026-08-13

Generated

2026-09-01

AI Q&A

2026-08-12

EPSS Evaluated

2026-08-30

NVD

CVE-2026-62914

EUVD

EUVD-2026-56416

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2019
microsoft	exchange_server	2016
microsoft	exchange_server	2019
microsoft	exchange_server	2016
microsoft	exchange_server	2019
microsoft	exchange_server	2019
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2019
microsoft	exchange_server	2019
microsoft	exchange_server	2019
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2019
microsoft	exchange_server	2016
microsoft	exchange_server	2019
microsoft	exchange_server	2016
microsoft	exchange_server	2016
microsoft	exchange_server	2019
microsoft	exchange_server	2016
microsoft	exchange_server	2019
microsoft	exchange_server	2016
microsoft	exchange_server	2019
microsoft	exchange_server	2019
microsoft	exchange_server	2019
microsoft	exchange_server_subscription_edition	to 15.02.2562.046 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This is a cross-site scripting (XSS) vulnerability in Microsoft Exchange Server. It occurs when user input is not properly neutralized during web page generation, allowing an attacker to inject malicious scripts into web pages viewed by other users.

Impact Analysis

An attacker could exploit this to perform spoofing attacks, potentially stealing user credentials, session cookies, or other sensitive data. It may also enable unauthorized actions on behalf of legitimate users.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Organizations may face fines or penalties for non-compliance.

Mitigation Strategies

Apply the latest security updates from Microsoft for Exchange Server as soon as possible to patch the cross-site scripting vulnerability.

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