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Microsoft Edge Bug Could Have Allowed Attackers to Silently Install Malicious Extensions

March 27, 2024

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A now-patched security flaw in the Microsoft Edge web browser could have been abused to install arbitrary extensions on users’ systems and carry out malicious actions.

“This flaw could have allowed an attacker to exploit a private API, initially intended for marketing purposes, to covertly install additional browser extensions with broad permissions without the user’s knowledge,” Guardio Labs security researcher Oleg Zaytsev said in a new report shared with The Hacker News.

Tracked as CVE-2024-21388 (CVSS score: 6.5), it was addressed by Microsoft in Edge stable version 121.0.2277.83 released on January 25, 2024, following responsible disclosure in November 2023. The Windows maker credited both Zaytsev and Jun Kokatsu for reporting the issue.

Read More on The Hacker News