CVE-2026-66306
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk43th percentile - higher than 43% of all known CVEs
Summary
A vulnerability in Skype for Business that generates error messages containing sensitive information allows an unauthorized attacker to disclose information over a network.
Risk Assessment
Risk of sensitive data leakage, which could be used for further attacks.
Recommendation
Update Skype for Business to the latest patched version and configure error messages to avoid exposing technical details.
Other vulnerabilities in Skype for Business
See all- CVE-2026-66302Critical
External control of file name or path in Skype for Business allows an unauthorized attacker to execute code over a network.
- CVE-2023-41763MediumActively exploited
Elevation of Privilege vulnerability in Skype for Business. Technical details are not available in the description.
- CVE-2026-69646High
Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.
- CVE-2026-69642Medium
A cross-site scripting (XSS) vulnerability in Skype for Business allows an unauthorized attacker to perform spoofing over a network.
- CVE-2026-66308Medium
An out-of-bounds read vulnerability in Skype for Business allows an authorized attacker to deny service over a 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-2026-66303Medium
A null pointer dereference vulnerability in Skype for Business allows an authorized attacker to deny service over a network.
- CVE-2026-63523Medium
A cross-site scripting (XSS) vulnerability in Skype for Business allows an unauthorized attacker to perform spoofing over a network.
Original NVD description (English source)
Generation of error message containing sensitive information in Skype for Business allows an unauthorized attacker to disclose information over a network.