Microsoft and Adobe Patch Tuesday, June 2026 Security Update Review

Key Points:

• Microsoft and Adobe have released critical security updates addressing a total of 329 vulnerabilities, including three zero-day vulnerabilities that could lead to remote code execution, privilege escalation, and denial-of-service attacks.
• Affected systems include various Microsoft products such as Windows, Microsoft Office, and Azure services, as well as Adobe applications like Acrobat Reader and InDesign. Failure to apply these patches could expose organizations to significant risks.
• Immediate patch deployment is recommended to mitigate the risk of exploitation. Organizations should prioritize the critical vulnerabilities identified in CVE-2026-49160, CVE-2026-45586, and CVE-2026-50507.

Technical Details: Key vulnerabilities include CVE-2026-49160 (HTTP.sys Denial of Service), CVE-2026-45586 (CTFMON Elevation of Privilege), and CVE-2026-50507 (BitLocker Security Feature Bypass). These vulnerabilities allow attackers to execute arbitrary code or elevate privileges under certain conditions.

MITRE ATT&CK Techniques: None mentioned

IOCs Mentioned: None mentioned