CVE-2026-66302

CVE-2026-66302 is a CRITICAL vulnerability (CVSS 9.8) in Skype for Business Server caused by external control of file name or path , allowing an unauthorized attacker to achieve remote code execution over the network with no privileges or user interaction. Affected products include Skype for Busi...

CVE-2026-66305

CVE-2026-66305 is a spoofing vulnerability in Skype for Business Server (Subscription Edition, 2019, and 2015) caused by the use of client-side authentication , which allows an authorized attacker to perform spoofing over a network. The CVSS v3.1 score is 7.1 (HIGH) , with high integrity impact a...

CVE-2026-66304

CVE-2026-66304 is a server-side request forgery (SSRF) vulnerability in Skype for Business Server , affecting the Subscription Edition , 2019 , and 2015 releases. An unauthorized remote attacker with no privileges required can exploit the flaw to disclose information over a network . The CVSS v3....

CVE-2026-63523

CVE-2026-63523 is a stored cross-site scripting (XSS) vulnerability in Skype for Business Server , affecting the Subscription Edition , 2019 , and 2015 releases. The flaw stems from improper neutralization of input during web page generation, allowing an unauthenticated attacker to perform spoofi...

CVE-2026-66306

Skype for Business Server (Subscription Edition, 2019, and 2015) is affected by an information disclosure vulnerability caused by the generation of error messages containing sensitive information , allowing an unauthorized attacker to disclose information over a network. The CVSS 3.1 score is 6.5...

CVE-2026-66307

An integer underflow (wrap/wraparound) vulnerability in Skype for Business Server allows an unauthorized, network-based attacker to cause a denial of service (CVSS 3.1: 7.5 HIGH , high availability impact). The affected products are Skype for Business Server Subscription Edition , Server 2019 , a...

CVE-2026-66308

CVE-2026-66308 is an out-of-bounds read in Skype for Business Server (Subscription Edition, 2019, and 2015) that allows an authorized attacker to cause a denial of service over a network. The vulnerability is rated CVSS 3.1: 6.5 (MEDIUM) with a vector of AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H, meani...

CVE-2026-66303

CVE-2026-66303 is a null pointer dereference in Skype for Business that allows an authorized attacker (low privileges required) to cause a denial of service over the network. The affected products are Skype for Business Server Subscription Edition , Skype for Business Server 2019 , and Skype for ...

CVE-2026-69642

CVE-2026-69642 is a cross-site scripting (XSS) vulnerability in Skype for Business Server (Subscription Edition, 2019, and 2015), caused by improper input neutralization during web page generation. An unauthorized attacker can perform spoofing over a network with no user interaction or privileges...

CVE-2026-69646

CVE-2026-69646 is an improper verification of cryptographic signature vulnerability in Skype for Business Server (Subscription Edition, 2015, and 2019). An unauthorized attacker on an adjacent network can perform spoofing without requiring privileges or user interaction. The CVSS 3.1 score is 8.3...