CVE-2026-56642: Microsoft Fabric Data Warehouse Remote Code Execution Vulnerability
Stack-based buffer overflow in Microsoft Fabric Data Warehouse allows an authorized attacker to execute code over a network.
CSIRTS triage
- What
- A stack-based buffer overflow allows an authorized attacker to execute code over a network.
- Who is affected
- Authorized users of Microsoft Fabric Data Warehouse.
- Urgency
- Remediation is high urgency due to the potential for remote code execution.
- Action
- Update to the patched version provided by Microsoft.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56642
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-566420.87% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 55% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-56642 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[NEW] [high] Microsoft SQL Server and Power BI: Multiple vulnerabilitiescert-bund
- unknownMultiple vulnerabilities in Microsoft products (July 15, 2026)cert-fr-avis
- unknownNCSC-2026-0232 [1.00] [M/H] Vulnerabilities fixed in Microsoft SQL Serverncsc-nl
- highCVE-2026-56642: Stack-based buffer overflow in Microsoft Fabric Data Warehouse allows an authorized attacker t…nvd
Recent advisories for Microsoft Fabric Data
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
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