Microsoft Microsoft Exchange Server 2019 Cumulative Update 15
23 CVEs affecting Microsoft Microsoft Exchange Server 2019 Cumulative Update 15. Latest disclosed: 2026-07-14. Critical: 1, High: 14.
| CVE | Severity | Score | Published | Summary |
|---|---|---|---|---|
CVE-2026-55008 | Critical | 9.6 | 2026-07-14 | Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform sp… |
CVE-2026-55005 | High | 8.8 | 2026-07-14 | Heap-based buffer overflow in Microsoft Exchange Server allows an authorized attacker to execute code over a network. |
CVE-2026-45504 | High | 8.8 | 2026-06-09 | Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network. |
CVE-2025-59249 | High | 8.8 | 2025-10-14 | Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network. |
CVE-2025-53782 | High | 8.4 | 2025-10-14 | Incorrect implementation of authentication algorithm in Microsoft Exchange Server allows an unauthorized attacker to elevate privileges locally. |
CVE-2026-47631 | High | 8.1 | 2026-06-09 | Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform sp… |
CVE-2026-45503 | High | 8.1 | 2026-06-09 | Improper authorization in Microsoft Exchange Server allows an authorized attacker to disclose information over a network. |
CVE-2026-42897 | High | 8.1 | 2026-05-14 | Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform sp… |
CVE-2025-53786 | High | 8.0 | 2025-08-06 | On April 18th 2025, Microsoft announced Exchange Server Security Changes for Hybrid Deployments and accompanying non-security Hot Fix. Microsoft made these cha… |
CVE-2026-55009 | High | 7.8 | 2026-07-14 | Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally. |
CVE-2026-55006 | High | 7.8 | 2026-07-14 | Insufficient granularity of access control in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally. |
CVE-2026-45583 | High | 7.5 | 2026-06-09 | Improper control of generation of code ('code injection') in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network. |
CVE-2025-64666 | High | 7.5 | 2025-12-09 | Improper input validation in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network. |
CVE-2025-59248 | High | 7.5 | 2025-10-14 | Improper input validation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. |
CVE-2025-33051 | High | 7.5 | 2025-08-12 | Exposure of sensitive information to an unauthorized actor in Microsoft Exchange Server allows an unauthorized attacker to disclose information over a network. |
CVE-2026-45501 | Medium | 6.5 | 2026-06-09 | Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to perform spoofing over a network. |
CVE-2026-21527 | Medium | 6.5 | 2026-02-10 | User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. |
CVE-2025-25005 | Medium | 6.5 | 2025-08-12 | Improper input validation in Microsoft Exchange Server allows an authorized attacker to perform tampering over a network. |
CVE-2026-45500 | Medium | 6.1 | 2026-06-09 | Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform sp… |
CVE-2025-64667 | Medium | 5.3 | 2025-12-09 | User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. |