Patch tracker / CVE reference / CVE-2026-45481
CVE-2026-45481
CVE-2026-45481 is a high severity Microsoft vulnerability with a CVSS score of 7.3. Its EPSS score puts the probability of exploitation in the next 30 days at 35%. 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.
Risk summary
Not in the CISA KEV catalog. EPSS exploit probability 35%. CVSS 7.3 (High).
This CVE is among the lower half of tracked Microsoft CVEs by EPSS exploit probability.
CVE-2026-45481 is a spoofing flaw in on-premises SharePoint (Enterprise Server 2016, Server 2019, and Subscription Edition) rated High severity at CVSS 7.3. Spoofing in SharePoint typically lets an attacker misrepresent content or identity to trusted users, which is dangerous in a platform where document trust and internal links drive workflows. It is not on the CISA KEV list and has no known ransomware association, so this is patch-on-schedule rather than emergency territory.
Do this: Apply the current Microsoft SharePoint security update to your 2016, 2019, and Subscription Edition farms during your next patch cycle.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2026-45481
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Official patch(es) for CVE-2026-45481
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 KB5002873, KB5002874, KB5002880 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-2026-45481. 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.