Total
239 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2002-0055 | 1 Microsoft | 3 Exchange Server, Windows 2000, Windows Xp | 2026-04-16 | 5.0 MEDIUM | N/A |
| SMTP service in Microsoft Windows 2000, Windows XP Professional, and Exchange 2000 allows remote attackers to cause a denial of service via a command with a malformed data transfer (BDAT) request. | |||||
| CVE-2000-0524 | 1 Microsoft | 2 Exchange Server, Outlook | 2026-04-16 | 5.0 MEDIUM | N/A |
| Microsoft Outlook and Outlook Express allow remote attackers to cause a denial of service by sending email messages with blank fields such as BCC, Reply-To, Return-Path, or From. | |||||
| CVE-2002-0049 | 1 Microsoft | 1 Exchange Server | 2026-04-16 | 6.4 MEDIUM | N/A |
| Microsoft Exchange Server 2000 System Attendant gives "Everyone" group privileges to the WinReg key, which could allow remote attackers to read or modify registry keys. | |||||
| CVE-2002-0507 | 2 Microsoft, Rsa | 2 Exchange Server, Securid | 2026-04-16 | 2.1 LOW | N/A |
| An interaction between Microsoft Outlook Web Access (OWA) with RSA SecurID allows local users to bypass the SecurID authentication for a previous user via several submissions of an OWA Authentication request with the proper OWA password for the previous user, which is eventually accepted by OWA. | |||||
| CVE-2006-0002 | 1 Microsoft | 3 Exchange Server, Office, Outlook | 2026-04-16 | 7.5 HIGH | N/A |
| Unspecified vulnerability in Microsoft Outlook 2000 through 2003, Exchange 5.0 Server SP2 and 5.5 SP4, Exchange 2000 SP3, and Office allows remote attackers to execute arbitrary code via an e-mail message with a crafted Transport Neutral Encapsulation Format (TNEF) MIME attachment, related to message length validation. | |||||
| CVE-2004-0840 | 1 Microsoft | 3 Exchange Server, Windows Server 2003, Windows Xp | 2026-04-16 | 10.0 HIGH | N/A |
| The SMTP (Simple Mail Transfer Protocol) component of Microsoft Windows XP 64-bit Edition, Windows Server 2003, Windows Server 2003 64-bit Edition, and the Exchange Routing Engine component of Exchange Server 2003, allows remote attackers to execute arbitrary code via a malicious DNS response message containing length values that are not properly validated. | |||||
| CVE-2001-0509 | 1 Microsoft | 4 Exchange Server, Sql Server, Windows 2000 and 1 more | 2026-04-16 | 5.0 MEDIUM | N/A |
| Vulnerabilities in RPC servers in (1) Microsoft Exchange Server 2000 and earlier, (2) Microsoft SQL Server 2000 and earlier, (3) Windows NT 4.0, and (4) Windows 2000 allow remote attackers to cause a denial of service via malformed inputs. | |||||
| CVE-2023-21529 | 1 Microsoft | 1 Exchange Server | 2026-04-14 | N/A | 8.8 HIGH |
| Microsoft Exchange Server Remote Code Execution Vulnerability | |||||
| CVE-2025-53786 | 1 Microsoft | 1 Exchange Server | 2026-02-27 | N/A | 8.0 HIGH |
| On April 18th 2025, Microsoft announced Exchange Server Security Changes for Hybrid Deployments and accompanying non-security Hot Fix. Microsoft made these changes in the general interest of improving the security of hybrid Exchange deployments. Following further investigation, Microsoft identified specific security implications tied to the guidance and configuration steps outlined in the April announcement. Microsoft is issuing CVE-2025-53786 to document a vulnerability that is addressed by taking the steps documented with the April 18th announcement. Microsoft strongly recommends reading the information, installing the April 2025 (or later) Hot Fix and implementing the changes in your Exchange Server and hybrid environment. | |||||
| CVE-2021-1730 | 1 Microsoft | 1 Exchange Server | 2026-02-24 | 5.8 MEDIUM | 5.4 MEDIUM |
| <p>A spoofing vulnerability exists in Microsoft Exchange Server which could result in an attack that would allow a malicious actor to impersonate the user.</p> <p>This update addresses this vulnerability.</p> <p>To prevent these types of attacks, Microsoft recommends customers to download inline images from different DNSdomains than the rest of OWA. Please see further instructions in the FAQ to put in place this mitigations.</p> | |||||
| CVE-2020-16969 | 1 Microsoft | 1 Exchange Server | 2026-02-23 | 4.3 MEDIUM | 7.1 HIGH |
| <p>An information disclosure vulnerability exists in how Microsoft Exchange validates tokens when handling certain messages. An attacker who successfully exploited the vulnerability could use this to gain further information from a user.</p> <p>To exploit the vulnerability, an attacker could include specially crafted OWA messages that could be loaded, without warning or filtering, from the attacker-controlled URL. This callback vector provides an information disclosure tactic used in web beacons and other types of tracking systems.</p> <p>The security update corrects the way that Exchange handles these token validations.</p> | |||||
| CVE-2020-16875 | 1 Microsoft | 1 Exchange Server | 2026-02-23 | 9.0 HIGH | 8.4 HIGH |
| <p>A remote code execution vulnerability exists in Microsoft Exchange server due to improper validation of cmdlet arguments.</p> <p>An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the System user. Exploitation of the vulnerability requires an authenticated user in a certain Exchange role to be compromised.</p> <p>The security update addresses the vulnerability by correcting how Microsoft Exchange handles cmdlet arguments.</p> | |||||
| CVE-2026-21527 | 1 Microsoft | 1 Exchange Server | 2026-02-11 | N/A | 6.5 MEDIUM |
| User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. | |||||
| CVE-2025-64667 | 1 Microsoft | 1 Exchange Server | 2026-01-02 | N/A | 5.3 MEDIUM |
| User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. | |||||
| CVE-2025-64666 | 1 Microsoft | 1 Exchange Server | 2026-01-02 | N/A | 7.5 HIGH |
| Improper input validation in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network. | |||||
| CVE-2021-26855 | 1 Microsoft | 1 Exchange Server | 2025-10-30 | 7.5 HIGH | 9.1 CRITICAL |
| Microsoft Exchange Server Remote Code Execution Vulnerability | |||||
| CVE-2021-26857 | 1 Microsoft | 1 Exchange Server | 2025-10-30 | 6.8 MEDIUM | 7.8 HIGH |
| Microsoft Exchange Server Remote Code Execution Vulnerability | |||||
| CVE-2021-26858 | 1 Microsoft | 1 Exchange Server | 2025-10-30 | 6.8 MEDIUM | 7.8 HIGH |
| Microsoft Exchange Server Remote Code Execution Vulnerability | |||||
| CVE-2021-27065 | 1 Microsoft | 1 Exchange Server | 2025-10-30 | 6.8 MEDIUM | 7.8 HIGH |
| Microsoft Exchange Server Remote Code Execution Vulnerability | |||||
| CVE-2021-31207 | 1 Microsoft | 1 Exchange Server | 2025-10-30 | 6.5 MEDIUM | 6.6 MEDIUM |
| Microsoft Exchange Server Security Feature Bypass Vulnerability | |||||