Patch tracker / CVE reference / CVE-2026-33112
CVE-2026-33112
CVE-2026-33112 is a Microsoft vulnerability that Microsoft rates Important, with a CVSS score of 8.8 (High). Its EPSS score puts the probability of exploitation in the next 30 days at 31%. Microsoft has shipped the fix: deploy one of the 3 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.
Our data comes from Microsoft, CISA and other public sources, and it can be wrong or out of date. If you are unsure, check the linked source before you act, and tell us when we are wrong so we can fix it.
Microsoft rates it Important. CVSS 8.8 (High). Fixed by 3 Microsoft security updates.
Risk summary
Not in the CISA KEV catalog. EPSS exploit probability 31%. CVSS 8.8 (High).
This CVE is among the top 5% of tracked Microsoft CVEs by EPSS exploit probability.
CVE-2026-33112 is a remote code execution flaw in Microsoft SharePoint, spanning Enterprise Server 2016, Server 2019, and the Subscription Edition, so on-premises SharePoint farms are the exposure here rather than SharePoint Online. With a CVSS score of 8.8 and an authenticated attack profile, a user with valid access can run code on the server, which typically means the farm service account and content databases are at risk. It is not in CISA KEV and EPSS sits at 3 percent, so there is no confirmed exploitation yet, but SharePoint RCE bugs have a track record of being weaponized after patch release.
Do this: Apply the Microsoft SharePoint update for CVE-2026-33112 to all 2016, 2019, and Subscription Edition farms, and run the associated PSConfig upgrade step so the fix fully applies.
AI-generated from public data, 2026-07-23. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2026-33112
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Official patch(es) for CVE-2026-33112
Elevated priority: high severity or a meaningful exploitation probability, sooner if an affected product is internet-facing. In Intune or Defender, confirm whether the fixing updates KB5002863, KB5002868, KB5002870 are installed across the affected products. Senserva does this automatically across your tenant and flags every missing patch.
Apply the Microsoft security updates below to fix CVE-2026-33112. Each KB page carries the Microsoft Update Catalog download, Microsoft's known issues for the update, a copy-paste PowerShell check for whether it is installed, and the Senserva AI read.
Scope and sources
- Affected products
- Fixed by the same updates
- Authoritative references
Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.