CVE-2013-3958: The login implementation in the Web Navigator in Siemens WinCC before 7.2 Update 1, as used in SIMATIC PCS7...

Security readout for executives and security teams

This flaw involves a hardcoded account in Siemens WinCC Web Navigator. In affected versions, a remote attacker could more easily gain access through an unspecified request. It matters most for industrial environments using WinCC or SIMATIC PCS7, where unauthorized access to supervisory systems can create operational risk. Likely exposed assets are Siemens WinCC Web Navigator deployments before 7.2 Update 1, including SIMATIC PCS7 8.0 SP1 and earlier. The CVE also says other products may use the affected component, but the provided bundle does not identify them. Treat this as a priority for Siemens industrial environments, especially where Web Navigator is remotely reachable. The hardcoded-account nature raises access-control concern, but incomplete public detail means teams should verify affected versions and follow Siemens guidance rather than assume broad exposure. Mitigation focus: Upgrade Siemens WinCC Web Navigator to 7.2 Update 1 or later where applicable.; Review Siemens SSA-345843 for product-specific remediation guidance.; Restrict Web Navigator access to trusted networks and administrative users..

Prepared

Jun 14, 2026, 22:07 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.