Dell System Update patches five RCE flaws
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Dell System Update versions prior to 2.3.0.0 contain multiple vulnerabilities, the most severe allowing unauthenticated remote code execution as root.
MS-ISAC advisory 2026-111 details five vulnerabilities in Dell System Update (DSU), a Windows utility used to find and install BIOS, driver, firmware, and application updates on Dell computers. The most severe flaw, CVE-2026-86360, could allow an unauthenticated remote attacker to gain filesystem access and ultimately execute arbitrary code with root privileges, leading to complete compromise of the application and underlying operating system.
Four additional lower-severity vulnerabilities were identified: an improper certificate validation issue (CVE-2026-63697) exploitable by a highly privileged remote attacker for code execution; a path traversal flaw (CVE-2026-71168) exploitable by a low-privileged local attacker; and two privilege escalation issues stemming from incorrect permission assignment (CVE-2026-86361) and improper access control (CVE-2026-86362), both exploitable by low-privileged local attackers.
There are no current reports of in-the-wild exploitation. Affected organizations running Dell System Update prior to version 2.3.0.0 should apply vendor updates promptly, enforce least privilege, and maintain standard vulnerability management and patching processes as outlined in the advisory.
Mentioned in this report
Source reporting: https://www.cisecurity.org/advisory/multiple-vulnerabilities-in-dell-system-update-could-allow-for-remote-code-execution_2026-111
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