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High 8.8Published Oct 14, 2026
CVE-2026-88164Microsoft Office SharePoint Elevation of Privilege Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Microsoft SharePoint Server Subscription Edition. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.74%, higher than 54% of scored CVEs.
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Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- Weakness (CWE)
- CWE-862
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.74% (percentile 54)
- Assigned by
- microsoft
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
Microsoft Microsoft SharePoint Server Subscription Edition microsoft:sharepoint_server_subscription_edition (from the name) | from 16.0.0 before 16.0.20326.20190 | CNA record |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88164vendor-advisory, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.