Patch tracker / CVE reference / CVE-2025-54518
CVE-2025-54518
Updated July 21, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Critical severity Microsoft vulnerability, CVSS 9.8. Fixed by 13 Microsoft security updates.
All about CVE-2025-54518: the Senserva AI read, whether it is exploited, the official patches, its change history, and the questions admins ask.
CVE-2025-54518 is a critical severity Microsoft vulnerability with a CVSS score of 9.8. Its EPSS score puts the probability of exploitation in the next 30 days at 72%. Microsoft has shipped the fix: deploy one of the 13 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.
Risk summary
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Senserva AI Opinion for CVE-2025-54518
Carrying a 2025 identifier, this Microsoft vulnerability is one of the older items in the current set, yet it rates Critical at CVSS 9.8 with a striking 72 percent EPSS exploit probability. That combination of a top Severity score and a high statistical likelihood of exploitation makes it a priority despite the absence of confirmed in-the-wild use. It also ships inside the Windows 10 1809 and Server 2019 May update, so it is fixed alongside dozens of other issues.
Do this: Prioritize the Windows update that carries CVE-2025-54518 given its 72 percent EPSS score, and confirm no 1809 or Server 2019 hosts are lagging behind.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2025-54518
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Exploitation and severity
Not in the CISA KEV catalog. EPSS exploit probability 72%. CVSS 9.8 (Critical).
This CVE is among the top 25% of tracked Microsoft CVEs by EPSS exploit probability.
Official patch(es) for CVE-2025-54518
High priority: EPSS puts the odds of near-term exploitation high. In Intune or Defender, confirm whether the fixing updates KB5078737, KB5087420, KB5087423, KB5087537, KB5087538, KB5087539, KB5087541, KB5087544, KB5087545, KB5089466, KB5089549, KB5093998, KB5094127 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-2025-54518. 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.
Affected products
Common questions about CVE-2025-54518
Is CVE-2025-54518 actively exploited?
It is not currently listed in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score puts the probability of exploitation in the next 30 days at 72%.
What patch fixes CVE-2025-54518?
Microsoft fixed CVE-2025-54518 in KB5078737, KB5087420, KB5087423, KB5087537, KB5087538, KB5087539, KB5087541, KB5087544, KB5087545, KB5089466, KB5089549, KB5093998, KB5094127. Download from the Microsoft Update Catalog, or let Intune, Windows Update, or WSUS deliver it.
Which products are affected by CVE-2025-54518?
Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows Server 2019, Windows Server 2025 (Server Core installation).
Can I ask my own AI about CVE-2025-54518?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2025-54518's key facts: severity, CVSS, EPSS exploit probability, CISA KEV status, and the fixing KB. Copy it into Claude, ChatGPT, or Copilot for a triage plan; the data is refreshed three times a day (5 AM, 12:30 PM, and 7 PM US Central).
Fixed by the same updates
If you are patching CVE-2025-54518, the same updates also fix these:
Authoritative references
Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.
