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cve 2026 20803

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CVE-2026-20803 is a Microsoft SQL Server elevation-of-privilege vulnerability caused by missing authentication for a critical function. An authorized attacker who can send SQL requests to an affected instance may be able to elevate privileges over the network. Discussions on WindowsForum.com cover mitigation strategies, including restricting network access, applying the latest SQL Server security updates, and reviewing configurations related to xp_cmdshell and other sensitive features. The vulnerability highlights the importance of proper authentication controls in database environments to prevent privilege escalation.
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    SQL Server CVE-2026-20803: Mitigating Missing Authentication Elevation of Privilege

    Microsoft’s Security Update Guide lists CVE-2026-20803 as a Microsoft SQL Server elevation‑of‑privilege vulnerability caused by missing authentication for a critical function, and the vendor’s advisory states that an authorized attacker who can send SQL requests to an affected instance may be...
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    • cve 2026 20803 missing authentication patch management sql server security
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    • Forum: Security Alerts
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