CVE-2026-66307
Integer underflow (wrap or wraparound) in Skype for Business allows an unauthorized attacker to deny service over a network.
- Published Sep 8, 2026
- CVSS 7.5 high
- 1.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available
Integer underflow (wrap or wraparound) in Skype for Business allows an unauthorized attacker to deny service over a network.