Microsoft Security Response Center Follow CVE-2026-69276 Microsoft UxTheme Library (uxtheme.dll) Remote Code Execution Vulnerability Integer underflow (wrap or wraparound) in Microsoft UxTheme Library (uxtheme.dll) allows an unauthorized attacker to execute code over a network. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69276 msrc.microsoft.com
