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May 2026 CVE Landscape
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Adobe fixes critical Magento zero-day exploited to backdoor servers
Adobe emergency-patches actively exploited max-severity Magento/Adobe Commerce zero-day CVE-2026-75650 (StyleSmuggler), used since Sept 4 to backdoor servers.
Adobe released an emergency hotfix (VULN-39341) for CVE-2026-75650, a max-severity zero-day dubbed StyleSmuggler affecting Adobe Commerce 2.4.4-2.4.9, Adobe Commerce B2B 1.3.3-1.5.3, and Magento Open Source 2.4.6-2.4.9, enabling arbitrary code execution. Sansec reports the flaw has been exploited since at least September 4 to plant a backdoor whose C2 host is disguised as an NTP server, leaving traces like 'Payment Transaction Failed Reminder' emails. A second attacker with unrelated tooling is exploiting the flaw to deploy a 485-byte PHP web shell that collects server details, checks pub/media writability, and exfiltrates data to an oast.site subdomain. Adobe recommends immediate hotpatching plus rotation of all secrets including admin passwords, API keys, database credentials, and SSH keys.
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NSA, CISA, FBI, DOE, and EPA Warn of Active AI
Five US agencies warn of active AI-assisted attacks on internet-exposed Siemens S7 PLCs across critical infrastructure, using disguised snap7 scripts for pre-positioning reconnaissance.
NSA, CISA, FBI, DOE, and EPA issued joint advisory CISA AA26-231A warning of an active hacking campaign against Siemens S7-series PLCs, from S7-200 through S7-1500 F-series, across US critical infrastructure. Threat actors use internet scanning services such as Censys and ZoomEye to locate exposed controllers, then perform read operations over S7comm on TCP port 102 using the legitimate snap7.dll and python-snap7 libraries, disguising AI-generated exploitation scripts as monitoring tools. The agencies assess the activity as pre-positioning ahead of possible process disruption, equipment damage, or safety incidents in Energy, Water, Critical Manufacturing, Chemical, Food and Agriculture, and Commercial Facilities sectors.
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⚡ Weekly Recap: Zero-Day Exploits, Insider Threats, APT Targeting, Botnets and More
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