CVEs / CVE-2026-33112
CVE-2026-33112: Microsoft Microsoft SharePoint Enterprise Server 2016 vulnerability
- high 8.8 CVSS 3.1 (from the CNA)
- EPSS 31.1% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
Are you affected? Check your servers with Stackurity: it lists the software on each server and the vulnerabilities to fix first.
Check your servers with Stackurity Already using Stackurity? Search for CVE-2026-33112
Description
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Microsoft SharePoint Enterprise Server 2016 | from 16.0.0, before 16.0.5552.1002 | 16.0.5552.1002 |
| Microsoft Microsoft SharePoint Server 2019 | from 16.0.0, before 16.0.10417.20128 | 16.0.10417.20128 |
| Microsoft Microsoft SharePoint Server Subscription Edition | from 16.0.0, before 16.0.19725.20280 | 16.0.19725.20280 |
Exploitation
Not in the CISA Known Exploited Vulnerabilities catalog as of 30 Oct 2026.
Severity
| CVSS 3.1 | 8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-502 |
References
- CVE-2026-33112 on NVD
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33112 Vendor Advisory
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.