Microsoft has disclosed a critical remote code execution (RCE) vulnerability affecting the Chromium-based Microsoft Edge browser. The flaw, tracked as CVE-2026-45495, could allow a remote attacker to execute arbitrary code on a vulnerable system by convincing a user to open a specially crafted webpage or malicious content. Successful exploitation may enable attackers to install malware, steal sensitive information, or gain further control of the affected device. Microsoft has released security updates to address the vulnerability and recommends users update their browsers immediately. The vulnerability poses a significant risk because Microsoft Edge is widely used across enterprise and personal environments. By exploiting the flaw through malicious websites or phishing campaigns, attackers can execute code within the browser context and potentially compromise the underlying system. Since browsers are commonly exposed to untrusted internet content, unpatched systems remain attractive targets for cybercriminals seeking initial access, credential theft, or malware deployment. Prompt patching is essential to reduce the risk of exploitation. Organizations should ensure that Microsoft Edge is updated to the latest available version across all endpoints. Security teams should prioritize patch deployment, monitor for suspicious browser activity, and educate users to avoid opening untrusted links or downloading content from unknown sources. Implementing endpoint protection, enforcing least-privilege access, and maintaining regular vulnerability management practices can further reduce the likelihood and impact of browser-based attacks.
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