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The vulnerability is an uninitialized use in the ANGLE (Almost Native Graphics Layer Engine) graphics library within Google Chrome versions prior to 149.0.7827.53. This flaw, identified as CWE-457, allows a remote attacker to read potentially sensitive information from the browser process’s memory simply by enticing a user to load a specially crafted HTML page. The attack does not require any special privileges or additional code execution; it leverages the improper initialization of memory variables during specific graphics processing operations. When the uninitialized variable is used, the contents of the previously allocated memory can be exposed to the attacker, potentially leaking confidential data such as passwords, encryption keys, or private session information. The attack complexity is low, and it is delivered over a network, requiring only user interaction. The vulnerability is rated as having a high confidentiality impact, as it allows the attacker to read sensitive process memory, but it does not affect system integrity or availability. The CVSS vector is AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N, resulting in a base score of 6.5 (Medium). The issue was fixed in Chrome 149.0.7827.53, released on June 2, 2026, and the CVE was published on June 4, 2026.
DailyCVE Form:
Platform: Google Chrome
Version: prior 149.0.7827.53
Vulnerability: Uninitialized Use
Severity: Medium
date: 2026-06-04
Prediction: 2026-06-02 (patch)
What Undercode Say
Check current Chrome version google-chrome --version Check for ANGLE vulnerability in logs (hypothetical) grep -i "angle|uninitialized" /var/log/chrome_debug.log List all Chrome versions in a system dpkg -l | grep chrome Verify if ANGLE is disabled (potential mitigation) google-chrome --disable-angle
Exploit
A remote attacker hosts a malicious HTML page containing specially crafted WebGL or graphics operations that trigger the uninitialized variable in ANGLE. When the victim visits the page, the browser reads uninitialized memory, exposing sensitive data such as session tokens or cross-origin information.
Example concept:
<html>
<body>
<canvas id="maliciousCanvas"></canvas>
<script>
// Hypothetical sequence to trigger uninitialized memory read
let gl = document.getElementById('maliciousCanvas').getContext('webgl');
// ... specific shader or buffer operations that cause uninitialized variable usage
// The return values could leak process memory.
</script>
</body>
</html>
Protection
- Update Google Chrome to version 149.0.7827.53 or later immediately.
- Enable Site Isolation in Chrome to limit memory sharing between processes, mitigating the impact of memory reads.
- As a temporary workaround, start Chrome with the `–disable-angle` flag to force software rendering, which removes the exposed code path.
- Keep your browser and operating system updated to ensure all security patches are applied.
Impact
- Information Disclosure: Attackers can read potentially sensitive data from Chrome’s process memory, including passwords, tokens, or other confidential information.
- Cross-Origin Data Leak: The vulnerability can bypass the same-origin policy, allowing attackers to read data from other origins that would otherwise be isolated.
- Low Complexity: The attack requires only user interaction (visiting a malicious page) and no privileges, making it easy to exploit.
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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