CVE-2026-11296: Chrome ImageCapture Privilege Escalation (149.0.7827.53)

Technical summary

CVE-2026-11296 stems from an inappropriate implementation in Chrome's ImageCapture functionality (CWE-269: Improper Access Control). The vulnerability permits privilege escalation when an attacker controls the renderer process and serves a specially crafted HTML page. The attack chain requires a prior renderer compromise, making this a secondary exploitation pathway. The CVSS 3.1 score of 7.5 reflects high impact across confidentiality, integrity, and availability, tempered by the high attack complexity and requirement for user interaction.

Business impact

This vulnerability presents a two-stage attack scenario: an attacker must first compromise the renderer process through another means (malware, code injection, or separate vulnerability), then exploit CVE-2026-11296 to escape the sandbox and gain system-level access. Organizations should evaluate this in context of their threat model—it is primarily relevant if your environment faces sophisticated, multi-stage attacks rather than opportunistic exploitation. The impact of successful exploitation is severe: an attacker gains the privileges of the Chrome process, potentially allowing access to sensitive data, system modification, or further lateral movement.

Affected systems

Chrome prior to version 149.0.7827.53 on Windows, macOS, and Linux systems. The vulnerability also affects the underlying operating system kernels on these platforms insofar as Chrome is a hosted application; however, the fix is delivered exclusively through the Chrome update. End users and organizations running affected Chrome versions are at risk only if they are simultaneously targeted by renderer-compromise exploits.

Exploitability

Exploitation requires two preconditions: (1) the attacker must have already compromised the Chrome renderer process, and (2) the user must visit a malicious or attacker-controlled webpage. This two-stage requirement significantly limits real-world exploitability compared to single-stage remote code execution vulnerabilities. It is not listed on the CISA Known Exploited Vulnerabilities (KEV) catalog, indicating no evidence of active, weaponized exploitation in the wild as of the publication date.

Remediation

Update Google Chrome to version 149.0.7827.53 or later. Chrome's auto-update mechanism should handle this automatically, but users can manually verify their version via Chrome menu > Help > About Google Chrome. No configuration changes or workarounds are available; patching is the only mitigation. Verify the update has been applied before considering this vulnerability resolved in your environment.

Patch guidance

Deploy Chrome version 149.0.7827.53 or later. Organizations using Chrome through managed deployment (via Google Admin Console, Microsoft Intune, or similar endpoint management tools) should prioritize this update in their patch cycle, but the attack complexity and KEV absence suggest this is not a critical, immediate-action item compared to actively exploited vulnerabilities. Test the update in non-production environments first if your organization has heavy integration with ImageCapture APIs or custom web applications that rely on camera functionality.

Detection guidance

Monitor for successful privilege escalation on systems running Chrome—look for child processes spawned by the Chrome process with elevated privileges, unusual access to system resources, or file writes outside the user's home directory. Endpoint Detection and Response (EDR) tools should alert on privilege escalation events. At the network level, detection is difficult because the malicious HTML is delivered through normal HTTPS traffic; focus on identifying the upstream renderer compromise. Behavioral analytics on Chrome sandbox escapes are a longer-term investment.

Why prioritize this

This vulnerability scores 7.5 (HIGH) on CVSS but does not appear on the KEV catalog and requires pre-existing renderer compromise. Prioritize patching based on your organization's risk of targeted, sophisticated attacks rather than broad, opportunistic threats. If your users face high risk of malware or targeted code injection attacks, elevate this in your patch schedule. For organizations with lower threat profiles, treat this as part of routine Chrome maintenance cycles rather than an emergency response priority.

Risk score, explained

The CVSS 3.1 score of 7.5 reflects: Network-accessible attack vector (AV:N), high attack complexity due to the requirement for renderer compromise and user interaction (AC:H), no special privileges required to initiate the attack (PR:N), and user interaction required to visit the malicious page (UI:R). The high impact scores (C:H, I:H, A:H) acknowledge that successful privilege escalation can lead to complete system compromise. The score is appropriately elevated despite low real-world exploitability because the technical impact—if exploitation succeeds—is severe.

Frequently asked questions