CVE-2026-62914: Microsoft Exchange Server Spoofing Vulnerability
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.
Other sources
Microsoft Exchange Server Spoofing Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.02.1748.049Patch KB5121574 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.02.1544.044Patch KB5121575 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.01.2507.072Patch KB5121576 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.02.2562.046Patch KB5121573
Event History
Frequently Asked Questions
What is the severity of CVE-2026-62914?
CVE-2026-62914 has a severity rating of 7.3, indicating a high risk.
How can I mitigate CVE-2026-62914 in my environment?
Mitigating CVE-2026-62914 involves applying security updates provided by Microsoft for affected Exchange Server versions.
What impact does CVE-2026-62914 have on Microsoft Exchange Server?
CVE-2026-62914 allows an authorized attacker to perform spoofing attacks through improper input handling, affecting the integrity of communications.
Which versions of Microsoft Exchange Server are affected by CVE-2026-62914?
CVE-2026-62914 affects Microsoft Exchange Server 2016, 2019, and the Subscription Edition RTM.
What is the nature of the vulnerability in CVE-2026-62914?
CVE-2026-62914 is a cross-site scripting (XSS) vulnerability that arises from improper neutralization of input during web page generation.