CVE-2026-15123 in Chrome
Summary
by MITRE • 07/09/2026
Inappropriate implementation in DOM in Google Chrome prior to 150.0.7871.115 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 • 07/09/2026
This vulnerability represents a critical heap corruption issue affecting the Document Object Model implementation within Google Chrome versions prior to 150.0.7871.115. The flaw manifests through improper handling of DOM elements and their associated memory management during HTML page rendering processes, creating opportunities for remote code execution through maliciously crafted web content. The vulnerability falls under the category of memory safety issues and specifically involves inadequate bounds checking or memory allocation validation within the browser's rendering engine.
The technical exploitation occurs when a remote attacker crafts a specific HTML page containing malformed DOM structures that trigger memory corruption during normal browser operation. This type of vulnerability typically arises from insufficient input validation or improper memory management practices where the browser fails to properly validate element boundaries or handle memory allocation for dynamic DOM elements. The heap corruption aspect indicates that the attacker can manipulate memory layout in ways that may allow arbitrary code execution, privilege escalation, or denial of service conditions.
From an operational perspective, this vulnerability poses significant risk to users who browse untrusted websites or encounter malicious content through various attack vectors including phishing campaigns, compromised advertising networks, or drive-by downloads. The high severity classification reflects the potential for remote code execution without user interaction, making it particularly dangerous in real-world scenarios. Attackers can leverage this flaw to gain control over affected systems, potentially leading to complete system compromise, data exfiltration, or establishment of persistent backdoors.
The vulnerability aligns with several CWE categories including CWE-121 for heap-based buffer overflow conditions and CWE-787 for out-of-bounds write operations. It also maps to ATT&CK techniques such as T1059 for command and scripting interpreter usage and T1566 for phishing campaigns that could deliver the malicious payloads. Organizations should prioritize immediate patching of affected Chrome versions, implement network-based protections through web application firewalls, and maintain comprehensive monitoring for suspicious browser behavior. Additionally, user education regarding safe browsing practices and regular security updates remains crucial in mitigating risks associated with such memory corruption vulnerabilities.
The remediation approach requires deployment of Chrome version 150.0.7871.115 or later where the underlying DOM handling has been properly patched to prevent the heap corruption conditions. Security teams should also consider implementing browser hardening measures including sandboxing, content security policies, and restricted browsing environments to minimize potential impact even if exploitation occurs. Regular vulnerability assessments and penetration testing should be conducted to identify similar memory safety issues within other browser components or related web technologies that might present similar attack surfaces.