Chromium Use-After-Free Vulnerability in ANGLE (CVE-2026-7359)

CVE-2026-7359 describes a use-after-free vulnerability present in ANGLE (Almost Native Graphics Layer Engine), a crucial component of the Chromium open-source project. This vulnerability impacts applications that utilize the Chromium engine, most notably Google Chrome and Microsoft Edge. While the provided source does not give specific exploitation details, use-after-free vulnerabilities can allow for arbitrary code execution. Google Chrome has already addressed this vulnerability, and Microsoft Edge has incorporated the fix from Chromium. This vulnerability matters to defenders because successful exploitation could lead to compromise of the browser and potentially the underlying system.

Attack Chain

1. An attacker crafts a malicious web page containing JavaScript code that leverages a flaw in ANGLE’s memory management.
2. A user visits the malicious web page through Chrome or Edge.
3. The JavaScript code triggers the use-after-free vulnerability by freeing a memory object in ANGLE and then attempting to access it again.
4. This memory corruption leads to a controlled crash or allows the attacker to overwrite memory with arbitrary data.
5. The attacker leverages the memory overwrite to inject malicious code into the browser process.
6. The injected code executes within the context of the browser, granting the attacker access to user data, cookies, and other sensitive information.
7. The attacker may then use this access to perform actions on behalf of the user, such as stealing credentials, installing malware, or spreading the attack to other systems.
8. The attacker achieves arbitrary code execution on the user’s system, potentially leading to full system compromise.

Impact

A successful exploit of CVE-2026-7359 could allow an attacker to execute arbitrary code within the context of the affected browser (Chrome or Edge). This can lead to sensitive information disclosure, data theft, and potentially full system compromise. The scope of impact is broad, affecting any user who visits a malicious webpage while using a vulnerable version of Chrome or Edge. Since Chrome and Edge are widely used, this vulnerability poses a significant risk.

Recommendation

• Deploy the Sigma rule Detect Suspicious WebGL Usage to identify potential exploitation attempts targeting ANGLE via WebGL.
• Monitor web server logs for suspicious requests (cs-uri-query) that may be related to the exploitation of CVE-2026-7359.
• Ensure that all Chrome and Edge installations are updated to the latest versions to patch CVE-2026-7359.