PHP2Shell flaws and Cisco VPN zero-day elevate OT threat level in DACH
Threat level for operational technology in Germany, Austria and Switzerland is rated elevated for calendar week 44 of 2026. Two PHP vulnerabilities, CVE-2026-109618 and CVE-2026-109619 (dubbed PHP2Shell), were added by CISA to its exploited-vulnerabilities catalog on 26 October. Several OT vendors, including Siemens, Schneider Electric, B&R, Belden, HMS and Wibu-Systems, confirmed affected products, and fixes are available in PHP 8.5.12, 8.4.27, 8.3.36 and 8.2.35. In parallel, attackers are exploiting a Cisco ASA/FTD zero-day that crashes SSL-VPN devices commonly used for remote maintenance, and Cisco has confirmed the exploitation. Separate advisories also flag unpatched web server flaws in Siemens SIMATIC controllers and an authentication bypass in Mitsubishi Electric ICONICS products.
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