CVE-2026-14427: Chrome Skia Heap Buffer Overflow & Sandbox Escape

Technical summary

CVE-2026-14427 is a heap buffer overflow in the Skia graphics engine, a core component of Chromium used for rendering graphics. The vulnerability exists in Google Chrome versions prior to 150.0.7871.46. Exploitation requires both renderer process compromise and user interaction with a malicious HTML page. The vulnerability is classified as CWE-122 (Heap-based Buffer Overflow) and carries a CVSS 3.1 score of 8.3 (HIGH severity) with a network attack vector, though exploitation has high complexity and requires user interaction. Chromium security reviewers designated this as Critical severity, reflecting the severity of a potential sandbox escape.

Business impact

Successful exploitation of this vulnerability could result in sandbox bypass, potentially allowing attackers who have already compromised the renderer process to escalate privileges and access sensitive data, modify content, or execute arbitrary actions outside Chrome's isolation boundaries. For organizations relying on Chrome as a primary browser, this represents a multi-stage attack risk: while the initial renderer compromise is non-trivial, the sandbox escape amplifies the impact significantly. Rapid patching is critical to maintain the integrity of Chrome's security model, which depends on process isolation.

Affected systems

Google Chrome versions before 150.0.7871.46 are affected. This includes all prior stable, beta, and dev releases of Chrome. The vulnerability does not affect other Chromium-based browsers unless they have integrated the same vulnerable Skia code without patches, though administrators should verify their derivative products against the upstream Chromium advisory. Desktop, mobile, and other Chrome deployments running unpatched versions are in scope.

Exploitability

While the CVSS score reflects HIGH severity, practical exploitation barriers exist. An attacker must first achieve renderer process compromise—a separate, non-trivial attack requiring either a separate Chrome vulnerability, malware, or supply-chain compromise. Once the renderer is compromised, the attacker must then craft and serve specific HTML to the same compromised process and trigger the heap overflow through user interaction. The combination of required preconditions and technical complexity limits opportunistic exploitation, though the sandbox escape impact remains severe for targeted attacks.

Remediation

Update Google Chrome to version 150.0.7871.46 or later. For enterprise deployments, use Chrome policy management to enforce automatic updates or restrict user access to unpatched Chrome instances. Verify that all Chrome installations—including those on managed endpoints—receive the patch. Monitor for any prior indicators of renderer process compromise, as this vulnerability's exploitation chain suggests an attacker with elevated access.

Patch guidance

Chromium has released Chrome 150.0.7871.46 and later with a fix for this vulnerability. Users should update immediately; Chrome on most platforms will auto-update within 24–48 hours. Enterprise administrators managing Chrome through Active Directory, MDM, or other policy tools should verify patch deployment through their management console. If auto-update is disabled in your organization, manually trigger updates or adjust policies to enforce the patch. Verify patch status by navigating to Chrome menu > About Google Chrome; the browser will display the current version and indicate if an update is pending.

Detection guidance

Monitor Chrome version inventory across your environment using endpoint management tools or browser telemetry. Flag any instances running versions below 150.0.7871.46 for immediate patching. Network-based detection is limited because this vulnerability requires renderer-process-level compromise first; focus on detecting the initial compromise vector (separate Chrome bugs, malware, or unusual process behavior). Inspect logs for suspicious Chrome renderer process activity, unexpected child process spawning, or execution of HTML payloads from untrusted sources. Consider EDR solutions that can detect memory corruption exploitation attempts or sandbox escape behaviors.

Why prioritize this

Although exploitation requires pre-existing renderer compromise, the sandbox escape capability makes this a high-priority patch. Sandbox escape vulnerabilities fundamentally weaken Chrome's threat model and could allow attackers to move laterally or access system resources. The ease of patch deployment via auto-update, combined with the severity of the impact, places this in the top tier for patching. Organizations should not treat the exploitation complexity as reason to delay—sandbox escapes are precisely what adversaries pursue once they have initial browser process access.

Risk score, explained

The CVSS 3.1 score of 8.3 (HIGH) reflects the severity of potential sandbox escape combined with requirements for user interaction and high attack complexity. The score appropriately captures the impact (confidentiality, integrity, availability all rated High) while accounting for the attack complexity and user interaction needed. Chromium's Critical designation aligns with this—sandbox escape is among the most dangerous browser vulnerabilities because it invalidates the isolation guarantees users depend on. The score does not reflect the separate difficulty of achieving initial renderer compromise, which is a prerequisite but outside the scope of this specific CVE.

Frequently asked questions