CVE-2026-4448 in Chrome
Summary
by MITRE • 03/20/2026
Heap buffer overflow in ANGLE 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
The heap buffer overflow vulnerability identified as CVE-2026-4448 represents a critical security flaw within the ANGLE graphics library component of Google Chrome browsers. This vulnerability exists in versions prior to 146.0.7680.153 and constitutes a high-severity issue according to Chromium security standards. The flaw specifically targets the heap memory management system, creating potential pathways for remote code execution through maliciously crafted web content.
The technical implementation of this vulnerability stems from improper bounds checking within the ANGLE graphics library which is responsible for handling graphics rendering operations in Chrome. When processing specially crafted HTML content, the library fails to validate array indices or buffer sizes properly, leading to memory corruption. This heap buffer overflow occurs during graphics processing operations where the application writes data beyond the allocated memory boundaries, potentially overwriting adjacent heap memory regions. The vulnerability is particularly concerning because it operates at the graphics rendering level, making it accessible through standard web browsing activities without requiring any special privileges or user interaction beyond visiting a malicious webpage.
The operational impact of this vulnerability extends beyond simple memory corruption, as it provides attackers with potential remote code execution capabilities. An attacker could craft a malicious webpage containing specially designed graphics elements that trigger the buffer overflow condition when Chrome renders the page. This would enable the execution of arbitrary code on the victim's system with the privileges of the browser process. The attack vector is particularly dangerous because it requires no user interaction beyond visiting the compromised webpage, making it an ideal candidate for drive-by download attacks. The heap corruption could potentially lead to information disclosure, system instability, or complete system compromise depending on the exploitation techniques employed by threat actors.
Mitigation strategies for CVE-2026-4448 primarily focus on immediate browser updates to versions 146.0.7680.153 or later where the vulnerability has been patched. Organizations should implement comprehensive patch management procedures to ensure all Chrome installations are updated promptly. Additional protective measures include deploying web application firewalls that can detect and block suspicious graphics rendering patterns, implementing strict content security policies, and using browser sandboxing features that limit the potential damage from successful exploits. Security teams should also monitor for indicators of compromise related to this vulnerability and consider implementing network-based intrusion detection systems that can identify exploitation attempts. The vulnerability aligns with CWE-121, heap-based buffer overflow, and represents a significant concern in the ATT&CK framework under the T1059.007 technique for command and scripting interpreter with potential for privilege escalation through browser-based attacks.