CVE-2026-7995 in Chrome
Summary
by MITRE • 05/06/2026
Out of bounds read in AdFilter in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 05/09/2026
This vulnerability represents a critical out-of-bounds read flaw in Google Chrome's AdFilter component that existed prior to version 148.0.7778.96. The issue stems from insufficient input validation within the ad filtering mechanism that processes maliciously crafted HTML content. When Chrome encounters specially constructed web pages containing malformed ad data, the AdFilter component fails to properly bounds-check memory accesses, leading to unauthorized memory reads beyond allocated buffers. This type of vulnerability falls under the Common Weakness Enumeration category CWE-129, which specifically addresses insufficient bounds checking in software implementations. The security implications are severe as this flaw allows remote attackers to potentially execute arbitrary code within Chrome's sandboxed environment, effectively bypassing the isolation mechanisms that protect users from malicious web content.
The operational impact of this vulnerability extends beyond simple code execution, as it enables attackers to leverage the sandbox escape technique described in the ATT&CK framework under T1059.007 for Command and Scripting Interpreter. Attackers can craft HTML pages containing malicious JavaScript or other payload components that exploit the out-of-bounds read to manipulate memory contents and ultimately gain control over the browser process. The Medium severity classification from Chromium security team reflects the complexity of exploitation required, though the potential for remote code execution within the browser sandbox remains a significant concern for enterprise and individual users alike. The vulnerability demonstrates how seemingly minor input validation failures in security components can create substantial attack vectors that compromise the fundamental security model of modern browsers.
Mitigation strategies should focus on immediate patching of affected Chrome versions to the latest stable releases that contain the necessary memory bounds checking fixes. Organizations should implement network-level controls such as content filtering solutions that can detect and block suspicious HTML content before it reaches user browsers. Browser hardening measures including disabling unnecessary ad filtering components and implementing strict content security policies can reduce the attack surface. Additionally, security teams should monitor for indicators of compromise related to this specific vulnerability and consider implementing sandbox monitoring solutions to detect anomalous memory access patterns. The fix typically involves adding proper bounds validation checks in the AdFilter component's memory handling routines, ensuring that all buffer accesses are validated against allocated memory boundaries before execution.