CVE-2026-97381

Legacy Update versions 1.12.0 through 1.13.1 are vulnerable to an origin validation error in the IsPermitted method of its ActiveX control. Due to a logic flaw, hostnames not on the permitted list fail to trigger an E_ACCESSDENIED error, causing the method to incorrectly return S_OK. An attacker ...

CVE-2026-97381 Legacy Update ActiveX control accepts unauthorized hosting origins

Legacy Update is a tool for activating and installing updates on legacy Windows PCs. Legacy Update 1.12.0 through 1.13.1 contains an origin validation error in the IsPermitted method of its ActiveX control. After successfully reading the hosting document's hostname, a hostname that is not on the...

PT-2026-113505

Name of the Vulnerable Software and Affected Versions Legacy Update versions 1.12.0 through 1.13.1 Description An origin validation error exists in the IsPermitted method of the ActiveX control. When the hosting document's hostname is not on the permitted list, the system fails to set E...