Patch tracker / CVE reference / CVE-2026-48562
CVE-2026-48562
CVE-2026-48562 is a medium severity Microsoft vulnerability with a CVSS score of 4.6. 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 4.6 (Medium).
This CVE is among the lower half of tracked Microsoft CVEs by EPSS exploit probability.
This is a spoofing flaw in on-premises SharePoint (2016 Enterprise, 2019, and Subscription Edition), rated Medium at CVSS 4.6, meaning it likely enables content or identity misrepresentation rather than direct code execution. It is not in CISA KEV and has no known ransomware use, so it is not an emergency, but SharePoint spoofing is useful in phishing and social engineering chains against your own users. Cloud SharePoint Online is not named here, so this is only a concern if you still run these on-prem editions.
Do this: Inventory your on-prem SharePoint 2016, 2019, and Subscription Edition farms and schedule the vendor patch for CVE-2026-48562 in your next maintenance window.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2026-48562
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Official patch(es) for CVE-2026-48562
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-2026-48562. 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.