CVE-2026-69642: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Skype for Business Server 2015 CU13
Description
Improper neutralization of input during web page generation ('cross-site scripting') in Skype for Business allows an unauthorized attacker to perform spoofing over a network.
CVSS v3.1
Score 6.5medium
Affected software
Microsoft
Skype for Business Server 2015 CU13
Microsoft
Skype for Business Server 2019 CU8
Microsoft
Skype for Business Server Subscription Edition CU1
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-69642, is a CWE-79 cross-site scripting issue in Microsoft Skype for Business Server 2015 CU13. It arises from improper neutralization of input during web page generation, which could allow an attacker to conduct spoofing attacks over a network. The CVSS 3.1 base score is 6.5, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impacts on confidentiality and integrity. Microsoft has published an official fix for this vulnerability.
Potential Impact
An attacker exploiting this vulnerability could perform spoofing attacks over the network, potentially misleading users or systems by injecting malicious scripts into web pages generated by the affected Skype for Business Server. The impact affects confidentiality and integrity but does not affect availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69642 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T21:24:59.408Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69642","vendor":"Microsoft"}]
Threat ID: 6aa059e3acd9273b4913eaca
Added to database: 09/08/2026, 18:54:27 UTC
Last enriched: 10/14/2026, 21:42:23 UTC
Last updated: 10/23/2026, 01:15:26 UTC
Views: 76
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