Microsoft has released patches for several Exchange Server vulnerabilities that could lead to denial-of-service, privilege escalation, remote code execution, spoofing attacks, and security feature bypasses This article explores security impact cve. . This flaw is related to CWE-294, which allows for authentication bypass through capture-replay attacks.
Another elevation-of-privilege flaw, CVE-2026-62910, is rated at 7.2 on the CVSS scale and stems from improper handling of resource identifiers, also known as resource injection. Affected Vulnerabilities and CVEs: CVE ID | Vulnerability type | Attack requirements | Security impact ---|---|---|--- CVE-2026-62910 | Elevation of Privilege | Network attack, low complexity, high privileges required, no user interaction | An authorized attacker can elevate privileges, potentially gaining SYSTEM-level access.
CVE-2026-62914 | Spoofing | Network attack, low complexity, low privileges required, user interaction required | An attacker can use malicious web content to spoof trusted Exchange-related content or target users. CVE-2026-62915 | Security Feature Bypass | Network attack, low complexity, low privileges required, no user interaction | An attacker can bypass authorization checks and perform unauthorized actions affecting data integrity. If the flaw is exploited successfully, an attacker could run malicious code on a vulnerable Exchange server, potentially leading to mailbox theft, persistence, lateral movement, data theft, or ransomware deployment.
Administrators should also review privileged accounts, monitor Exchange logs for abnormal authentication activity, investigate unusual mailbox access, and restrict unnecessary remote administrative access.
