Microsoft Corporation exchange server vulnerabilities (CVE)

CVE records published for Microsoft Corporation exchange server, newest first. Follow to get an email when a new one appears.

139 results
7.5High
CVE-2026-87696

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Improper verification of cryptographic signature in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

7.8High
CVE-2026-87695

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Inclusion of functionality from untrusted control sphere in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.

7.8High
CVE-2026-87692

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server Subscription Edition RTM

Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.

2.3%EPSS
8.8High
CVE-2026-96940

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

2.7%EPSS
9.1Critical
CVE-2026-69641

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

5.9Medium
CVE-2026-69382

Microsoft Exchange Server Information Disclosure Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Use of a broken or risky cryptographic algorithm in Microsoft Exchange Server allows an unauthorized attacker to disclose information over a network.

8.1High
CVE-2026-69380

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

7.5High
CVE-2026-69378

Microsoft Exchange Server Denial of Service Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Uncontrolled recursion in Microsoft Exchange Server allows an unauthorized attacker to deny service over a network.

1.2%EPSS
6.5Medium
CVE-2026-69375

Microsoft Exchange Server Tampering Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Authorization bypass through user-controlled key in Microsoft Exchange Server allows an authorized attacker to perform tampering over a network.

6.5Medium
CVE-2026-69361

Microsoft Exchange Server Spoofing Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to perform spoofing over a network.

9.3Critical
CVE-2026-69356

Microsoft Exchange Server Spoofing Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

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

8.8High
CVE-2026-69355

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

External control of file name or path in Microsoft Exchange Server allows an authorized attacker to execute code over a network.

8.1High
CVE-2026-55007

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Double free in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.

8.0High
CVE-2026-62911

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

6.5Medium
CVE-2026-65813

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

6.5Medium
CVE-2026-62915

Microsoft Exchange Server Security Feature Bypass Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature over a network.

7.3High
CVE-2026-62914

Microsoft Exchange Server Spoofing Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

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.

8.8High
CVE-2026-62913

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Heap-based buffer overflow in Microsoft Exchange Server allows an authorized attacker to execute code over a network.

6.5Medium
CVE-2026-62912

Microsoft Exchange Server Denial of Service Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.

2.0%EPSS
7.2High
CVE-2026-62910

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Improper control of resource identifiers ('resource injection') in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

1.0%EPSS
7.8High
CVE-2026-55009

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.

2.5%EPSS
9.6Critical
CVE-2026-55008

Microsoft Exchange Server Spoofing Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

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

7.8High
CVE-2026-55006

Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Insufficient granularity of access control in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.

8.8High
CVE-2026-55005

Microsoft Exchange Server Remote Code Execution Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

Heap-based buffer overflow in Microsoft Exchange Server allows an authorized attacker to execute code over a network.

1.0%EPSS
8.1High
CVE-2026-47631

Microsoft Exchange Server Spoofing Vulnerability

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23; Microsoft Microsoft Exchange Server 2019 Cumulative Update 14; Microsoft Microsoft Exchange Server 2019 Cumulative Update 15; Microsoft Microsoft Exchange Server Subscription Edition RTM

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