{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/sql-server-2019/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["SQL Server 2016","SQL Server 2017","SQL Server 2019","SQL Server 2022"],"_cs_severities":["critical"],"_cs_tags":["privilege-escalation","execution","mssql"],"_cs_type":"threat","_cs_vendors":["Microsoft"],"content_html":"\u003cp\u003eA vulnerability exists in Microsoft SQL Server that allows a remote, authenticated attacker to execute arbitrary code and gain administrator privileges on the affected system. This vulnerability impacts Microsoft SQL Server versions 2016, 2017, 2019, and 2022. Successful exploitation could lead to complete system compromise, data theft, or denial of service. Organizations using these versions of SQL Server should investigate potential exposures and implement mitigations. The exact nature of the vulnerability is not detailed in the provided source, requiring further research to develop specific detection methods.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker authenticates to the target SQL Server instance using valid credentials.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious SQL query designed to exploit the vulnerability. The specific syntax and payload will depend on the underlying flaw.\u003c/li\u003e\n\u003cli\u003eThe attacker executes the malicious SQL query against the SQL Server instance.\u003c/li\u003e\n\u003cli\u003eThe vulnerable SQL Server component processes the query, leading to arbitrary code execution.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the initial code execution to escalate privileges within the SQL Server environment.\u003c/li\u003e\n\u003cli\u003eThe attacker uses escalated privileges to execute operating system commands.\u003c/li\u003e\n\u003cli\u003eThe attacker installs a persistent backdoor or implants additional malware.\u003c/li\u003e\n\u003cli\u003eThe attacker achieves full administrative control over the SQL Server and underlying operating system.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability grants an attacker full administrative rights on the affected Microsoft SQL Server instance and the underlying operating system. This can lead to the complete compromise of sensitive data stored within the database, the installation of malware, and the potential for lateral movement within the network. The number of potential victims is broad, encompassing any organization utilizing vulnerable versions of Microsoft SQL Server.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInvestigate potential exposures and apply relevant security updates from Microsoft as soon as they become available.\u003c/li\u003e\n\u003cli\u003eMonitor SQL Server logs for suspicious activity indicative of unauthorized code execution. Deploy the following Sigma rule to detect unusual SQL Server commands.\u003c/li\u003e\n\u003cli\u003eReview and enforce the principle of least privilege for SQL Server accounts to limit the impact of potential compromises.\u003c/li\u003e\n\u003cli\u003eEnable Sysmon process creation logging to enhance visibility into processes spawned by SQL Server.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-13T08:40:06Z","date_published":"2026-05-13T08:40:06Z","id":"https://feed.craftedsignal.io/briefs/2026-05-mssql-privesc/","summary":"A remote, authenticated attacker can exploit a vulnerability in Microsoft SQL Server 2017, 2019, 2016 and 2022 to execute arbitrary code and gain administrator privileges.","title":"Microsoft SQL Server Privilege Escalation Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-05-mssql-privesc/"}],"language":"en","title":"CraftedSignal Threat Feed — SQL Server 2019","version":"https://jsonfeed.org/version/1.1"}