CVE-2026-63512: CWE-863: Incorrect Authorization in Microsoft Microsoft SharePoint Enterprise Server 2016
Incorrect authorization in Microsoft Office SharePoint allows an authorized attacker to perform tampering over a network.
AI Analysis
Technical Summary
This vulnerability (CWE-863) in Microsoft SharePoint Enterprise Server 2016 involves incorrect authorization, enabling an attacker with some level of authorization to tamper with the system remotely. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requires low privileges, no user interaction, and impacts integrity without affecting confidentiality or availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this vulnerability to perform unauthorized tampering actions on the affected SharePoint server over the network. This could lead to integrity violations of data or configurations within the SharePoint environment. There is no impact on confidentiality or availability according to the CVSS vector. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63512 to remediate this vulnerability.
CVE-2026-63512: CWE-863: Incorrect Authorization in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
Incorrect authorization in Microsoft Office SharePoint allows an authorized attacker to perform tampering over a network.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-863) in Microsoft SharePoint Enterprise Server 2016 involves incorrect authorization, enabling an attacker with some level of authorization to tamper with the system remotely. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requires low privileges, no user interaction, and impacts integrity without affecting confidentiality or availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this vulnerability to perform unauthorized tampering actions on the affected SharePoint server over the network. This could lead to integrity violations of data or configurations within the SharePoint environment. There is no impact on confidentiality or availability according to the CVSS vector. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63512 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-16T22:05:22.740Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63512","vendor":"Microsoft"}]
Threat ID: 6a7b5825bf8831d539156233
Added to database: 08/11/2026, 17:13:09 UTC
Last enriched: 08/11/2026, 20:57:06 UTC
Last updated: 08/12/2026, 01:21:20 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.