CVE-2026-62912
MediumCVSS 6.5Exploitation Probability (EPSS)
Elevated risk68th percentile - higher than 68% of all known CVEs
Summary
A deserialization of untrusted data vulnerability in Microsoft Exchange Server allows an authorized attacker to deny service over a network.
Risk Assessment
An authorized attacker could cause service unavailability, potentially disrupting organizational operations.
Recommendation
Apply security patches for Microsoft Exchange Server.
Other vulnerabilities in Microsoft Exchange Server
See all- CVE-2026-87696High
Improper verification of cryptographic signature in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
- CVE-2026-87695High
A vulnerability in Microsoft Exchange Server involves inclusion of functionality from an untrusted control sphere. An authorized attacker can elevate privileges locally.
- CVE-2026-87692High
A deserialization of untrusted data vulnerability in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.
- CVE-2026-77910High
Incorrect authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
- CVE-2026-70571High
Stack-based buffer overflow in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-70279Critical
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.
- CVE-2026-69641Critical
Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
- CVE-2026-69356Critical
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.
- CVE-2026-55008Critical
A cross-site scripting (XSS) vulnerability in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. The flaw is due to improper neutralization of input during web page generation.
- CVE-2026-45502Medium
A Server-Side Request Forgery (SSRF) vulnerability in Microsoft Exchange Server allows an authorized attacker to disclose information over a network.
Original NVD description (English source)
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS