CVE-2026-4454 in Chrome
Summary
by MITRE • 03/20/2026
Use after free in Network in Google Chrome prior to 146.0.7680.153 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 03/25/2026
This vulnerability represents a critical use-after-free condition in Google Chrome's network component that could enable remote code execution through malicious web pages. The flaw occurs when the browser processes crafted HTML content that triggers improper memory management during network operations, creating a scenario where freed memory locations are accessed after being reallocated. Such vulnerabilities typically arise from inadequate pointer validation and memory lifecycle management within the browser's rendering and network stack components.
The technical implementation of this vulnerability involves memory corruption that can be exploited through web-based attacks, making it particularly dangerous in the context of modern browser security. When Chrome processes malicious HTML content, the network subsystem may attempt to access memory that has already been freed, leading to unpredictable behavior that attackers can potentially manipulate to execute arbitrary code. This type of vulnerability falls under the Common Weakness Enumeration category CWE-416, which specifically addresses use-after-free conditions, and aligns with ATT&CK technique T1203 for exploitation through web-based attacks.
The operational impact of CVE-2026-4454 extends beyond simple memory corruption, as it provides attackers with a potential pathway for privilege escalation and system compromise. Remote exploitation requires no user interaction beyond visiting a malicious webpage, making it particularly dangerous for enterprise environments where users may encounter untrusted content. The high severity classification indicates that successful exploitation could lead to complete system compromise, with potential for data exfiltration, persistent backdoor installation, or further network infiltration. Organizations running affected Chrome versions face significant risk exposure, particularly in environments where users access untrusted web content or where browser-based attacks are common.
Mitigation strategies for this vulnerability should include immediate patch deployment to Chrome version 146.0.7680.153 or later, as this represents the first release that addresses the memory management flaw. Network administrators should implement additional security controls such as web application firewalls, content filtering solutions, and browser hardening measures to reduce attack surface. Regular security assessments and vulnerability scanning should be conducted to identify potentially affected systems, while user education programs should emphasize the importance of avoiding untrusted web content. Organizations should also consider implementing sandboxing technologies and privilege separation mechanisms to limit potential damage from successful exploitation attempts, with particular attention to maintaining up-to-date security patches across all browser installations in their environment.