CVE-2026-13841: Chrome Skia Integer Overflow Sandbox Escape (CVSS 8.3)

Technical summary

An integer overflow vulnerability (CWE-472) exists in Skia, Google Chrome's graphics rendering engine, affecting versions prior to 150.0.7871.47. The flaw allows a compromised renderer process to exploit memory corruption conditions via a maliciously crafted HTML page, potentially enabling arbitrary code execution outside the sandbox environment. The vulnerability requires renderer process compromise and user interaction (following a link or viewing a page) as prerequisites.

Business impact

This vulnerability poses a significant risk to organizations where employees use Chrome to access untrusted content or potentially compromised websites. A successful exploit chain—first compromising the renderer, then escaping the sandbox—could give attackers unrestricted access to the host system, including access to sensitive files, credentials, and the ability to pivot to other corporate systems. The indirect nature of the attack (requiring prior renderer compromise) moderates the immediate threat, but the sandbox-escape component makes it strategically valuable to sophisticated threat actors.

Affected systems

Google Chrome versions prior to 150.0.7871.47 are affected. Chrome on Windows, macOS, and Linux all run the same Skia library and are vulnerable. Organizations relying on Chrome for secure browsing should prioritize patch deployment across all platforms.

Exploitability

Exploitation requires a two-stage attack: first, a remote attacker must compromise the Chrome renderer process (via a malicious website or crafted HTML), and second, exploit the integer overflow to escape the sandbox. While the initial renderer compromise is feasible through web-based attack, the sandbox escape itself is a complex technical challenge. The CVSS vector reflects this complexity (AC:H indicates high attack complexity), meaning successful end-to-end exploitation is not trivial. However, once achieved, the impact is complete system compromise. This vulnerability is not known to be actively exploited in the wild (KEV status: false).

Remediation

Organizations must upgrade Chrome to version 150.0.7871.47 or later on all systems. This can be enforced through enterprise policies (Google Admin Console for managed Chrome deployments, or standard OS update mechanisms for personal devices). Verify patch deployment within 30 days of release, particularly on systems used to access untrusted or high-risk websites.

Patch guidance

Deploy Chrome version 150.0.7871.47 or later. For enterprise environments, use Google's update policies to enforce automatic updates. For individual users, Chrome typically auto-updates; verify the version in Settings > About Chrome. Note that users must fully close and reopen Chrome for the update to take effect in some cases. Test patch application on a sample of systems before organization-wide deployment.

Detection guidance

Monitor Chrome version numbers across the organization using mobile device management (MDM) or endpoint detection and response (EDR) tools. Check for the presence of Chrome versions prior to 150.0.7871.47 as non-compliant. Because exploitation of the sandbox escape is technically complex and unlikely to leave obvious system logs, behavioral detection of post-exploitation activity (e.g., unusual file system or registry access by Chrome processes, credential access, lateral movement) is more practical than detection of the exploit itself.

Why prioritize this

This merits immediate attention due to the HIGH CVSS severity (8.3) and the high-impact nature of sandbox escapes. While full exploitation requires renderer compromise first, successful attacks grant complete system control. Organizations should treat this as a critical patch deployment requirement, especially for systems where employees browse untrusted content. The complexity of the attack chain (requiring two stages) allows a brief window for controlled patching, but should not delay deployment significantly.

Risk score, explained

The CVSS 8.3 HIGH score reflects a network-accessible vulnerability (AV:N) with high confidentiality, integrity, and availability impact (C:H, I:H, A:H), balanced against high attack complexity (AC:H) and the requirement for prior renderer compromise. The score appropriately captures that while the vulnerability is dangerous, it is not a trivial, one-click exploit. The sandbox-escape capability pushes the severity into the HIGH category despite the prerequisites.

Frequently asked questions