CVE-2026-64922: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Microsoft SharePoint Enterprise Server 2016
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-64922) involves improper neutralization of input during web page generation in Microsoft SharePoint Enterprise Server 2016, classified as CWE-79 (Cross-site Scripting). An authorized attacker can exploit this flaw to perform spoofing attacks over a network. The CVSS 3.1 base score is 4.6 (medium severity), with network attack vector, low attack complexity, requiring privileges and user interaction, impacting confidentiality and integrity with no availability impact. Microsoft has issued an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this XSS vulnerability to perform spoofing attacks, potentially leading to limited confidentiality and integrity impacts within the affected SharePoint environment. There is no known exploitation in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64922 to remediate this vulnerability.
CVE-2026-64922: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
CVSS v3.1
Score 4.6medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-64922) involves improper neutralization of input during web page generation in Microsoft SharePoint Enterprise Server 2016, classified as CWE-79 (Cross-site Scripting). An authorized attacker can exploit this flaw to perform spoofing attacks over a network. The CVSS 3.1 base score is 4.6 (medium severity), with network attack vector, low attack complexity, requiring privileges and user interaction, impacting confidentiality and integrity with no availability impact. Microsoft has issued an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this XSS vulnerability to perform spoofing attacks, potentially leading to limited confidentiality and integrity impacts within the affected SharePoint environment. There is no known exploitation in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64922 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-20T20:25:40.977Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64922","vendor":"Microsoft"}]
Threat ID: 6a7b582bbf8831d53915633f
Added to database: 08/11/2026, 17:13:15 UTC
Last enriched: 08/11/2026, 20:13:26 UTC
Last updated: 08/12/2026, 00:21:18 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.