Showing only posts tagged zero-day vulnerability. Show all posts.

Two Windows vulnerabilities, one a 0-day, are under active exploitation

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Two Windows vulnerabilities—one a zero-day that has been known to attackers since 2017 and the other a critical flaw that Microsoft initially tried and failed to patch recently—are under active exploitation in widespread attacks targeting a swath of the Internet, researchers say. The zero-day went undiscovered until …

As many as 2 million Cisco devices affected by actively exploited 0-day

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As many as 2 million Cisco devices are susceptible to an actively exploited zero-day that can remotely crash or execute code on vulnerable systems. Cisco said Wednesday that the vulnerability, tracked as CVE-2025-20352, was present in all supported versions of Cisco IOS and Cisco IOS XE, the operating system …

High-severity WinRAR 0-day exploited for weeks by 2 groups

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A high-severity zero-day in the widely used WinRAR file compressor is under active exploitation by two Russian cybercrime groups. The attacks backdoor computers that open malicious archives attached to phishing messages, some of which are personalized. Security firm ESET said Monday that it first detected the attacks on July …