The vulnerability, designated CVE-2025-6554, affects the Chromium V8 JavaScript engine and has been added to CISA’s Known Exploited Vulnerabilities (KEV) catalog, marking it as a high-priority threat requiring immediate attention from organizations worldwide. The type confusion vulnerability occurs when the V8 engine incorrectly handles data types, creating opportunities for malicious actors to manipulate memory and potentially execute arbitrary code on victim systems. According to CISA’s KEV catalog, the vulnerability enables attackers to perform sophisticated attacks through malicious web pages, potentially leading to complete system compromise. The agency’s designation of this flaw as a known exploited vulnerability indicates that threat actors are already leveraging this weakness in active attack campaigns. This directive mandates that federal civilian executive branch agencies remediate known exploited vulnerabilities within specified timeframes to protect government networks from active threats. The vulnerability’s impact extends to multiple web browsers that utilize the Chromium engine, including Microsoft Edge, Opera, and numerous other Chromium-based browsers. CISA has established a July 23, 2025, deadline for federal agencies to implement necessary mitigations, following the requirements outlined in Binding Operational Directive (BOD) 22-01.
This Cyber News was published on cybersecuritynews.com. Publication date: Thu, 03 Jul 2025 07:50:13 +0000