CVE-2026-11057: Chrome Skia Uninitialized Memory Leak – 6.5 CVSS

Technical summary

CVE-2026-11057 is an uninitialized memory use vulnerability (CWE-457) in Skia's rendering pipeline. The flaw exists because certain memory buffers are not properly initialized before use, leaving them populated with whatever data previously occupied that memory space. An attacker controlling the renderer process can craft HTML that triggers the vulnerable code path, causing sensitive data from other processes or previous allocations to leak into the attacker's accessible memory space. Chrome versions prior to 149.0.7827.53 are affected across Windows, macOS, and Linux platforms.

Business impact

This vulnerability alone has limited direct business impact because it requires renderer process compromise as a prerequisite. However, it significantly amplifies the damage of other browser exploits: an attacker chaining this flaw with a separate renderer escape or initial compromise vulnerability can extract credential material, session tokens, or other sensitive data resident in memory. For organizations where users handle highly sensitive information in the browser, the information disclosure risk could facilitate credential theft or account compromise. Incident response and forensics teams should consider this as part of multi-stage attack chains targeting users.

Affected systems

Google Chrome prior to version 149.0.7827.53 on Windows, macOS, and Linux is directly affected. The vulnerability is tied to the Skia graphics library, which is bundled with Chromium-based browsers. Verify whether other Chromium-based applications (Edge, Opera, Brave, Electron apps) and their version boundaries are impacted by checking vendor-specific advisory communications, as version thresholds may differ.

Exploitability

Exploitability is moderate in isolation but context-dependent. The vulnerability requires two attack vectors: (1) the attacker must first compromise the Chrome renderer process through a separate vulnerability or social engineering, and (2) the user must then visit a page controlled by the attacker. The CVSS 3.1 score of 6.5 reflects this two-step requirement (AV:N, AC:L, PR:N, UI:R). No public exploit code is known at this time, and the vulnerability was not flagged for active exploitation in the KEV catalog. The flaw is not a browser sandbox escape; it operates within an already-compromised renderer context.

Remediation

Update Chrome to version 149.0.7827.53 or later. Google typically rolls out updates automatically on most platforms, though enterprise deployments may require manual approval. Verify that all Chromium-based browsers and embedded Chromium applications in your environment are also patched according to their respective vendor advisories. For high-risk users (e.g., those handling credentials or classified information), consider enforcing auto-update policies and monitoring for delayed patch adoption.

Patch guidance

Chrome 149.0.7827.53 and all later releases in the 149+ line contain the fix. Organizations using managed Chrome deployments should reference Google's Chrome Enterprise release notes to confirm availability in their update channel and deploy within your standard patch window. If using a separate Chromium-based browser, consult that vendor's advisory to determine the corresponding patched version, as release numbers and timelines may differ.

Detection guidance

Monitor for Chrome crashes or renderer-process exceptions following visits to untrusted or newly-visited websites, as exploitation may result in abnormal memory access patterns. Endpoint Detection and Response (EDR) tools should flag unusual memory read operations from renderer processes. Network detection is difficult because the attack occurs entirely within the browser process; focus on behavioral indicators such as unexpected process memory dumps or unusual data exfiltration from the browser. Historical detection of the predecessor exploit (the renderer compromise) is more productive than detecting the information leak itself.

Why prioritize this

This vulnerability merits a medium-priority patch cycle—not emergency, but not deferred. While it requires renderer process compromise as a prerequisite, it meaningfully amplifies the impact of other browser exploits and should be patched as part of your standard monthly Chrome update. Prioritize faster patching only if you have concurrent evidence of renderer exploits in the wild targeting your user base; otherwise, align with your standard Chrome update cadence.

Risk score, explained

The CVSS 3.1 score of 6.5 (Medium) reflects: Network attack vector (AV:N) and low attack complexity (AC:L)—any user visiting a crafted page is at risk; user interaction required (UI:R)—the user must navigate to attacker-controlled content; no privilege escalation (PR:N); confidentiality impact is high (C:H) because sensitive memory can be read; integrity and availability are not impacted (I:N, A:N). The score appropriately discounts the requirement for prior renderer compromise; that prerequisite is inherent to the attack scenario but reflected in the 'AC:L' assumption that the renderer is already under attack.

Frequently asked questions