Microsoft patches two actively exploited zero-days (CVE-2024-29988, CVE-2024-26234)
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Microsoft Releases Record
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September 2025 CVE Landscape
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Two New Windows Zero-Days Exploited in the Wild — One Affects Every Version Ever Shipped
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Cisco warns about public exploit code for critical flaws in its 220 Series smart switches
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Three Zero
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3 Actively Exploited Zero-Day Flaws Patched in Microsoft's Latest Security Update
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U.S. CISA adds SKYSEA Client View, Rapid7 Velociraptor, Microsoft Windows, and IGEL OS flaws to its Known Exploited Vulnerabilities catalog
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Week in review: Windows kernel flaw patched, suspected Fortinet FortiWeb zero-day exploited
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Cisco FMC bugs exploited by nation-state and ransomware actors (CVE-2026-20079, CVE-2026-20316)
Cisco Talos confirms nation-state (Sandworm) and ransomware (Qilin) actors actively exploit CVE-2026-20079 and CVE-2026-20316 in Secure Firewall Management Center.
CVE-2026-20079 is a critical unauthenticated authentication bypass in the FMC web interface allowing root-level script and command execution via crafted HTTP requests; CVE-2026-20316 stems from static hard-coded credentials enabling unauthenticated logins. Cisco Talos detailed three intrusion clusters: web shell and JAR deployment for credential theft, a Sandworm-attributed reverse shell and credential-harvesting implant, and a suspected Qilin ransomware operator chain. Cisco urges immediate hotfixes ahead of a comprehensive hardening release the week of September 16, or taking the FMC management interface offline.
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Another Apache Log4j Vulnerability Is Actively Exploited in the Wild (CVE-2021
Apache Log4j 2 RCE CVE-2021-44228 is actively exploited via crafted JNDI lookups; Palo Alto Unit 42 urges upgrading to Log4j 2.17.1.
Unit 42 details CVE-2021-44228, an easily exploited remote code execution flaw in Apache Log4j 2 where attacker-supplied JNDI lookups in logged user input cause payload download and execution. Massive internet-wide scanning for unpatched systems has begun, with observed follow-on activity including information stealing, Cobalt Strike delivery, and coinmining. The recommended fix is Log4j 2.17.1, which also patches CVE-2021-45046, CVE-2021-45105, and CVE-2021-44832. Widely used Java software including Apache Struts, Solr, Druid, Flink, ElasticSearch, and Spring Boot is affected.
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