CVE-2026-66302
CriticalCVSS 9.8Summary
External control of file name or path in Skype for Business allows an unauthorized attacker to execute code over a network.
Risk Assessment
The risk includes remote code execution by an unauthorized attacker, potentially leading to full system compromise and data breach.
Recommendation
Apply Microsoft patches immediately and restrict access to Skype for Business from trusted networks.
Other vulnerabilities in Skype for Business
See all- CVE-2026-69646High
Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.
- CVE-2026-66307High
Integer underflow (wrap or wraparound) in Skype for Business allows an unauthorized attacker to deny service over a network.
- CVE-2026-66305High
Use of client-side authentication in Skype for Business allows an authorized attacker to perform spoofing over a network.
- CVE-2026-66304High
Server-side request forgery (SSRF) in Skype for Business allows an unauthorized attacker to disclose information over a network.
- CVE-2024-20695Medium
A vulnerability in Skype for Business allows information disclosure.
Original NVD description (English source)
External control of file name or path in Skype for Business allows an unauthorized attacker to execute code over a network.