CVE-2026-11141: Chrome Audio Memory Disclosure Vulnerability – CVSS 6.5

Technical summary

CVE-2026-11141 is an uninitialized memory use vulnerability (CWE-457) affecting the audio processing module in Chrome's renderer process. The flaw allows information disclosure when uninitialized heap or stack memory is accessed without proper initialization checks. An attacker with renderer-process compromise can trigger this condition through crafted HTML, bypassing browser isolation boundaries and exposing data from the renderer's memory space. The CVSS 3.1 score of 6.5 reflects high confidentiality impact with network-based attack surface but requiring user interaction and prior process compromise.

Business impact

Information disclosure vulnerabilities in browser renderers pose a data exfiltration risk, particularly for organizations where employees access sensitive materials (financial records, intellectual property, credentials) in browser tabs. While this specific CVE requires renderer compromise as a precondition, it reduces the complexity of a multi-stage attack chain. An adversary who gains initial renderer access through a separate vulnerability or social engineering can use this flaw to harvest memory contents without triggering additional suspicious behavior, potentially capturing session tokens, cached passwords, or API keys.

Affected systems

The vulnerability affects Google Chrome on Windows, macOS, and Linux systems running versions prior to 149.0.7827.53. The listing references affected operating systems (Apple macOS, Linux kernel, Microsoft Windows) indicating this is a Chrome vulnerability that impacts the browser across these platforms, not a kernel or OS flaw itself. Any organization with Chrome deployments should assess exposure based on current browser versions in use.

Exploitability

Exploitation requires two conditions: (1) the renderer process must already be compromised through another vulnerability or attack vector, and (2) the user must view a crafted HTML page. This two-stage requirement limits direct exploitability from untrusted web content alone but fits a plausible post-compromise scenario where an attacker combines multiple CVEs or leverages existing access. The CVE has not been added to the CISA Known Exploited Vulnerabilities catalog, indicating no observed active exploitation as of the publication date.

Remediation

Organizations should update Google Chrome to version 149.0.7827.53 or later across all deployments. For Windows environments, this update is often automatic; for managed macOS and Linux fleets, verify automated update mechanisms are enabled or schedule manual rollouts. Verify the update version in Chrome's about page (chrome://about). No workarounds exist for the underlying flaw; patching is the only mitigation.

Patch guidance

Apply Chrome version 149.0.7827.53 or any subsequent stable release. Chrome's auto-update mechanism should deploy this patch within days of release; however, confirm deployment in high-security environments by checking browser version on sample endpoints. For organizations with extended support requirements, note that Chrome's rapid release cycle means older major versions are unsupported. Test the update in a non-production environment if you maintain custom Chrome deployments or extensions that may have compatibility requirements.

Detection guidance

Detection focuses on behavioral indicators rather than the vulnerability itself, since exploitation requires renderer compromise followed by memory access via crafted HTML. Monitor for (1) unexpected renderer process crashes or hangs associated with audio-related operations, (2) combinations of web exploits in threat intelligence feeds, and (3) users accessing known attack vectors. Endpoint detection and response (EDR) tools can flag suspicious process behavior or memory access patterns. Network-level detection is limited, as the attack is browser-internal; focus on host-based telemetry.

Why prioritize this

This vulnerability rates as medium-priority for most organizations. While the CVSS score of 6.5 and information-disclosure nature justify attention, the requirement for pre-existing renderer compromise limits its role as a primary attack vector. Prioritize patching based on user exposure: high-risk users (executives, researchers, financial staff) handling sensitive data warrant faster updates. Organizations already running Chrome version 149 or later can deprioritize this CVE. Combine with threat intelligence on active renderer exploits to assess if this flaw is being chained with other vulnerabilities in the wild.

Risk score, explained

The CVSS 3.1 score of 6.5 (Medium) reflects a network-based attack with low complexity and no special privileges required, but tied to user interaction and requiring a compromised renderer process. Confidentiality impact is rated high (uninitialized memory can contain sensitive data), while integrity and availability are not affected. The score appropriately captures a secondary exploitation technique that amplifies the damage of initial renderer compromise rather than serving as a standalone entry point.

Frequently asked questions