CVE-2026-10982: Chrome WebXR Use-After-Free Remote Code Execution

Technical summary

CVE-2026-10982 is a use-after-free vulnerability (CWE-416) in the WebXR module of Chromium-based browsers. The flaw occurs when memory is accessed after it has been freed, typically due to improper lifecycle management of WebXR objects. An attacker crafting malicious HTML can trigger this condition remotely, leading to code execution within the renderer process sandbox. The Chromium security team rated this as High severity. The vulnerability is present in Google Chrome prior to version 149.0.7827.53 and affects multiple operating systems including Windows, macOS, and Linux distributions.

Business impact

This vulnerability poses a direct risk to any organization whose employees use Chrome for web browsing. Compromise of the browser sandbox could expose sensitive data accessed within the browser, steal credentials, or serve as a pivot point for lateral network movement. The remote attack vector and low barrier to exploitation (requiring only a user visit to a malicious site) elevates risk for enterprises with unrestricted web access. Financial institutions, government agencies, and organizations handling classified or proprietary data should prioritize remediation.

Affected systems

Google Chrome versions before 149.0.7827.53 are vulnerable across all major operating systems: Windows, macOS, and Linux. The vulnerability is specific to the WebXR component, so it only affects users who access WebXR-enabled content (immersive web experiences, AR/VR applications). Organizations running Chrome on managed endpoints, as well as BYOD environments where Chrome is used, require patching. Check your Chrome fleet version against 149.0.7827.53 to determine exposure.

Exploitability

The vulnerability is readily exploitable. It requires no special privileges, network access is network-accessible (AV:N), and exploitation chains are straightforward (AC:L). The main barrier is user interaction: the victim must visit or interact with a malicious webpage. Given the prevalence of phishing, malvertising, and watering-hole attacks, this interaction barrier is low in real-world scenarios. The CVSS score of 8.8 reflects high confidence, impact, and ease of exploitation. No public exploit code is known to exist at the time of this writing, but the technical simplicity of use-after-free flaws suggests weaponization is likely.

Remediation

Update Google Chrome to version 149.0.7827.53 or later on all affected systems. Chrome's auto-update mechanism typically deploys patches within 24–48 hours of release; however, forced restarts may be necessary on some configurations. Organizations managing Chrome fleet deployments should use group policies or MDM solutions to enforce the minimum version. Verify patch deployment using Chrome's chrome://version page or command-line tools (verify against the vendor advisory for exact deployment procedures). No workaround exists; patching is the only remediation.

Patch guidance

Google Chrome updates should be deployed immediately upon availability. For enterprise environments: 1) Verify current Chrome version across managed endpoints (use chrome://version or Chrome Enterprise reporting). 2) Confirm that Chrome auto-update is enabled or use group policy to enforce updates (verify against the vendor advisory for specific policy configurations). 3) Schedule mandatory browser restarts if required by your environment. 4) Validate patch deployment by spot-checking systems and confirming version 149.0.7827.53 or higher. For individual users, enable automatic updates if not already active and restart the browser promptly after updates are installed.

Detection guidance

Direct detection of exploitation attempts is challenging without endpoint detection and response (EDR) tools. Monitor for: 1) WebXR API calls from untrusted sources (cross-origin requests with WebXR initialization). 2) Unusual memory access patterns or crashes in the renderer process, which may indicate exploitation failure. 3) Anomalous process behavior following browser activity, such as subprocess spawning or file writes. 4) Network traffic from browser processes to external command-and-control servers. EDR solutions with memory tagging or heap analysis are most effective. Browser-level detection is limited; rely on behavioral analysis and threat intelligence feeds alerting for known malware distribution of WebXR exploits.

Why prioritize this

This vulnerability merits immediate prioritization due to its high CVSS score (8.8), remote exploitability via user interaction, and the ubiquitous nature of Chrome in modern workplaces. Use-after-free flaws in browser sandboxes are historically favored by sophisticated threat actors and nation-states. The lack of KEV listing does not diminish urgency; active in-the-wild exploitation may emerge rapidly. Organizations should treat this as a critical patch, second only to vulnerabilities already in active exploitation or affecting authentication systems.

Risk score, explained

The CVSS 3.1 score of 8.8 (High) reflects: network-accessible attack vector (AV:N), low complexity (AC:L), no privileges required (PR:N), and user interaction required (UI:R). The impact is high across confidentiality, integrity, and availability (C:H/I:H/A:H), though constrained by browser sandbox isolation (S:U). The score accurately captures the threat: widespread exposure, easy exploitation, and significant potential harm if the sandbox is breached. However, the sandboxing does provide some defense-in-depth, preventing immediate host compromise in most cases.

Frequently asked questions