CVE-2026-17887 in Chrome
Summary
by MITRE • 07/30/2026
Use after free in TabStrip in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who convinced a user to engage in specific UI gestures to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 07/30/2026
This vulnerability represents a use-after-free condition in the TabStrip component of Google Chrome, specifically affecting versions prior to 151.0.7922.72. The flaw resides in how the browser handles memory management during tab interaction scenarios, creating a scenario where freed memory regions can be accessed after they have been deallocated. The vulnerability is categorized under CWE-416 which defines use-after-free conditions as a critical memory safety issue that can lead to arbitrary code execution. When an attacker crafts a malicious HTML page and convinces a user to perform specific UI gestures such as tab switching or closing operations, the browser's TabStrip component may attempt to access memory that has already been freed, resulting in heap corruption.
The technical exploitation of this vulnerability requires precise timing and specific user interaction patterns to trigger the memory corruption. The attacker must craft HTML content that manipulates tab behavior in a way that causes the TabStrip component to reference freed memory locations during subsequent operations. This type of vulnerability falls under the ATT&CK framework's technique T1059 which involves executing malicious code through compromised applications, and more specifically aligns with T1203 which covers exploitation for arbitrary code execution. The medium severity classification indicates that while exploitation is not trivial, successful exploitation can lead to complete system compromise through heap corruption attacks.
The operational impact of this vulnerability extends beyond simple memory corruption as it creates opportunities for remote code execution in the context of the browser process. When heap corruption occurs due to use-after-free conditions, attackers can potentially manipulate program flow, inject malicious code, or escalate privileges within the browser environment. The attack vector requires user interaction through specific UI gestures, making it less likely to be exploited automatically but still poses a significant risk in targeted attacks. Browser-based exploitation represents a common entry point for advanced persistent threats where initial compromise often occurs through web-based delivery mechanisms.
Mitigation strategies for this vulnerability include immediate updating of Chrome browsers to version 151.0.7922.72 or later, which contains the necessary patches to address the memory management issue in TabStrip. Organizations should implement proactive browser update policies and consider using automated patch management solutions to ensure timely deployment of security fixes. Additionally, network administrators can deploy web application firewalls and content filtering solutions to block access to known malicious domains that may attempt to exploit this vulnerability. The fix typically involves implementing proper memory reference tracking and ensuring that tab-related operations do not access freed memory regions, which aligns with secure coding practices recommended by the OWASP Top Ten project and other security standards. Regular security assessments and penetration testing should include verification of browser component memory management to prevent similar vulnerabilities from being introduced in future releases.