Microsoft Skype For Business Server
24 CVEs affecting Microsoft Skype For Business Server. Latest disclosed: 2026-09-08. Critical: 1, High: 8.
| CVE | Severity | Score | Published | Summary |
|---|---|---|---|---|
CVE-2026-66302 | Critical | 9.8 | 2026-09-08 | External control of file name or path in Skype for Business allows an unauthorized attacker to execute code over a network. |
CVE-2026-69646 | High | 8.3 | 2026-09-08 | Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network. |
CVE-2026-66307 | High | 7.5 | 2026-09-08 | Integer underflow (wrap or wraparound) in Skype for Business allows an unauthorized attacker to deny service over a network. |
CVE-2026-66304 | High | 7.5 | 2026-09-08 | Server-side request forgery (ssrf) in Skype for Business allows an unauthorized attacker to disclose information over a network. |
CVE-2023-36789 | High | 7.2 | 2023-10-10 | Skype for Business Remote Code Execution Vulnerability |
CVE-2023-36786 | High | 7.2 | 2023-10-10 | Skype for Business Remote Code Execution Vulnerability |
CVE-2023-36780 | High | 7.2 | 2023-10-10 | Skype for Business Remote Code Execution Vulnerability |
CVE-2021-26422 | High | 7.2 | 2021-05-11 | Skype for Business and Lync Remote Code Execution Vulnerability |
CVE-2026-66305 | High | 7.1 | 2026-09-08 | Use of client-side authentication in Skype for Business allows an authorized attacker to perform spoofing over a network. |
CVE-2026-69642 | Medium | 6.5 | 2026-09-08 | Improper neutralization of input during web page generation ('cross-site scripting') in Skype for Business allows an unauthorized attacker to perform spoofing… |
CVE-2026-66308 | Medium | 6.5 | 2026-09-08 | Out-of-bounds read in Skype for Business allows an authorized attacker to deny service over a network. |
CVE-2026-66306 | Medium | 6.5 | 2026-09-08 | Generation of error message containing sensitive information in Skype for Business allows an unauthorized attacker to disclose information over a network. |
CVE-2026-66303 | Medium | 6.5 | 2026-09-08 | Null pointer dereference in Skype for Business allows an authorized attacker to deny service over a network. |
CVE-2026-63523 | Medium | 6.5 | 2026-09-08 | Improper neutralization of input during web page generation ('cross-site scripting') in Skype for Business allows an unauthorized attacker to perform spoofing… |
CVE-2022-26911 | Medium | 6.5 | 2022-04-15 | Skype for Business Information Disclosure Vulnerability |
CVE-2021-26421 | Medium | 6.5 | 2021-05-11 | Skype for Business and Lync Spoofing Vulnerability |
CVE-2021-24099 | Medium | 6.5 | 2021-02-25 | Skype for Business and Lync Denial of Service Vulnerability |
CVE-2021-24073 | Medium | 6.5 | 2021-02-25 | Skype for Business and Lync Spoofing Vulnerability |
CVE-2019-0798 | Medium | 6.1 | 2019-04-09 | A spoofing vulnerability exists when a Lync Server or Skype for Business Server does not properly sanitize a specially crafted request, aka 'Skype for Business… |
CVE-2024-20695 | Medium | 5.7 | 2024-02-13 | Skype for Business Information Disclosure Vulnerability |