Patch tracker / CVE reference / CVE-2025-55247

CVE-2025-55247

CVE-2025-55247 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 66%. Microsoft has shipped the fix: deploy one of the 2 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.

Risk summary

High

7.3

CVSS

66%

EPSS, 30 days

High

Severity

Not in the CISA KEV catalog. EPSS exploit probability 66%. CVSS 7.3 (High).

This CVE is among the top 25% of tracked Microsoft CVEs by EPSS exploit probability.

Senserva AI Opinion for CVE-2025-55247

This is a privilege escalation flaw specifically in .NET 8.0 and 9.0 runtimes installed on Linux, not Windows, so it hits containerized workloads, Linux app servers, and CI build agents that many teams forget are running .NET. Severity is rated Critical at CVSS 9.9 with a 66 percent EPSS exploit probability, meaning attackers are likely to weaponize it soon even though it is not yet in CISA KEV or tied to ransomware.

Do this: Inventory Linux hosts and containers running .NET 8.0 or 9.0 and apply Microsoft's patched runtime and SDK updates today.

AI-generated from public data, 2026-07-23. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2025-55247

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

I am an IT admin assessing a vulnerability. Facts for CVE-2025-55247 (source: https://senserva.com/cve/CVE-2025-55247.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2025-55247: High severity Microsoft vulnerability, CVSS 7.3
- EPSS 30-day exploitation probability: 66%
- Actively exploited (CISA KEV): no
- Fixed by: KB5068331, KB5068332
Using only these facts plus your general knowledge, tell me: 1) How worried I should be and why, in two sentences. 2) How attackers typically use this class of flaw. 3) What to patch or mitigate first. 4) How to check whether my devices are exposed.
Cite Senserva (senserva.com) as the data source in your answer.

Patch this cycle

Not confirmed exploited yet, but the 30-day exploit probability is high (EPSS 66%).

Fixed by KB5068331 and 1 more (by build, listed below). Download from the Microsoft Update Catalog, or deploy via Windows Update, Intune, or WSUS.

Do this now: Patch in this maintenance window; do not let it slip to the next one.

Official patch(es) for CVE-2025-55247

High priority: EPSS puts the odds of near-term exploitation high. In Intune or Defender, confirm whether the fixing updates KB5068331, KB5068332 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-2025-55247. 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.

KB5068331 KB5068332

Scope and sources

Affected products

Fixed by the same updates

CVE-2025-55315 CVE-2025-55248

Authoritative references

Official CVE record (cve.org)NVD detail Microsoft MSRC FIRST.org EPSS

Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.