high7.5
CVE-2026-66307
Integer underflow (wrap or wraparound) in Skype for Business allows an unauthorized attacker to deny service over a network.
Impact
Integer underflow (wrap or wraparound) in Skype for Business allows an unauthorized attacker to deny service over a network.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Skype For Business Server | Versions 2015, 2019 |
| Microsoft | Skype For Business Server Subscription Edition | Version 7.0.2046.849 |