CVE-2026-14081: Chrome DevTools Policy Enforcement Flaw Enables Memory Data Leakage

Technical summary

CVE-2026-14081 stems from insufficient policy enforcement in Chrome's DevTools subsystem, classified under CWE-602 (Client-Side Enforcement of Server-Side Security). A malicious Chrome extension can circumvent DevTools access controls to read potentially sensitive data directly from Chrome process memory. The vulnerability affects the extension sandbox boundary, allowing an attacker to move beyond the normally restricted capabilities a benign extension should have. Google's internal assessment rated this as Low severity, though the CVSS 3.1 score of 6.5 reflects the need for user interaction and the confidentiality impact.

Business impact

Organizations must consider the risk of insider threats or compromised supply chains that could lead employees to install malicious extensions, especially on shared or BYOD devices used for work. A compromised extension could harvest credentials, authentication tokens, cached session data, or other sensitive information resident in Chrome's memory. For companies managing large Chrome deployments or relying on extensions from third-party vendors, this vulnerability underscores the importance of extension governance and user education around installation prompts.

Affected systems

Google Chrome on Windows, macOS, and Linux are affected in all versions before 150.0.7871.47. Apple macOS, Linux kernel, and Microsoft Windows themselves are not directly vulnerable; they are listed in the vendors_products field because Chrome runs on these platforms. The vulnerability is specific to the Chrome browser and its extension handling.

Exploitability

Exploitation requires user interaction: the attacker must convince the target to install a malicious extension, typically through social engineering, fake app store pages, or compromised vendor websites. Once installed, the extension operates within Chrome's process space and can abuse the DevTools policy gap to read memory. No network interaction or advanced user privilege is needed beyond the user's willingness to add the extension. However, exploitation is not automatic—it depends on the attacker's ability to craft and distribute a convincing malicious extension and persuade targets to install it.

Remediation

Update Google Chrome to version 150.0.7871.47 or later. This patch reinforces policy enforcement in DevTools, closing the memory-access gap. Users should also audit installed extensions, removing any that are unfamiliar or from untrusted sources. Organizations should implement extension management policies (via Google Admin Console or group policy) to restrict or allowlist extensions and disable installation from outside the Chrome Web Store where feasible.

Patch guidance

Google Chrome will auto-update for most users; verify that your installed version is 150.0.7871.47 or higher by checking Settings > About Chrome. On managed deployments, use your MDM/EMM or Chrome Enterprise policy to enforce the update. Users with auto-update disabled should manually trigger an update. Verify the patch has been applied before clearing this item from your patch management queue.

Detection guidance

Monitor Chrome extension installations across your organization using Chrome Management tools or third-party endpoint detection platforms. Look for recently installed extensions that have unusual permissions (especially those requesting access to DevTools, process memory, or system APIs). In forensic investigations, examine the Extensions directory and review Chrome's extension event logs. Network detection should flag suspicious extension downloads or installations from non-official sources. If your organization has deployed EDR tools, monitor for anomalous memory access patterns from browser processes.

Why prioritize this

This vulnerability carries a CVSS score of 6.5 (MEDIUM) and has not been added to the CISA KEV catalog, indicating it is not yet known to be exploited in active campaigns. However, it merits prompt patching because: (1) memory access can expose high-value secrets like authentication tokens; (2) social engineering attacks targeting extension installation are common; (3) the fix is a routine browser update with low deployment friction. Organizations with strict extension policies and user security training face lower risk than those with permissive extension cultures.

Risk score, explained

The CVSS 3.1 score of 6.5 reflects a Network attack vector (extensions downloaded over HTTP/HTTPS), Low attack complexity (no special conditions beyond user installation), no privilege requirement, user interaction (the user must install the extension), unchanged scope, high confidentiality impact (memory access), and no integrity or availability impact. The Medium severity aligns with the real-world scenario: while an attacker can extract sensitive data, doing so requires deliberate social engineering and user compliance, making mass exploitation unlikely but targeted exploitation plausible.

Frequently asked questions