Patch tracker / CVE reference / CVE-2025-26687
CVE-2025-26687
CVE-2025-26687 is a high severity Microsoft vulnerability with a CVSS score of 7.5. Its EPSS score puts the probability of exploitation in the next 30 days at 14%. Microsoft has shipped the fix: deploy one of the 14 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 14%. CVSS 7.5 (High).
This CVE is among the lower half of tracked Microsoft CVEs by EPSS exploit probability.
A Win32k elevation of privilege flaw rated High Severity at CVSS 8.8 with an 18 percent exploit probability, on Windows 10 1809 and Server 2019. Win32k is the most exploited privilege escalation surface in Windows history, and fresh bugs there get folded into malware toolkits quickly because the exploitation patterns are so well rehearsed. Whatever initial access an attacker has, a Win32k bug is the standard next step to SYSTEM.
Do this: Patch desktops and terminal servers promptly, since interactive sessions are where Win32k escalations get used.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2025-26687
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Official patch(es) for CVE-2025-26687
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 KB5055518, KB5055519, KB5055521, KB5055523, KB5055526, KB5055527, KB5055528, KB5055547, KB5055557, KB5055561, KB5055570, KB5055581, KB5055596, KB5055609 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-2025-26687. 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.