CVE-2026-11024: Chrome Skia Stack Buffer Overflow - Patch Guide & Risk Analysis

Technical summary

CVE-2026-11024 is a stack buffer overflow (CWE-121) in Skia, the open-source 2D graphics library integrated into Chrome. The flaw permits a remote attacker to write beyond allocated stack memory boundaries through crafted HTML content. The vulnerability has a CVSS 3.1 score of 8.8 (HIGH severity) with a network attack vector, low attack complexity, and no privilege requirements. User interaction is required to trigger the vulnerability. Successful exploitation could result in arbitrary code execution within the Chrome sandbox context, affecting confidentiality, integrity, and availability.

Business impact

This vulnerability poses a material risk to organizations where employees use Chrome for business purposes, particularly those handling sensitive data or accessing restricted resources. A successful attack could allow an attacker to steal credentials, intellectual property, or session tokens from within the browser. The requirement for user interaction means phishing and social engineering campaigns could weaponize this flaw. Organizations must weigh patching urgency against operational constraints, but the HIGH severity and ease of exploitation via standard web browsing make this a priority remediation target.

Affected systems

Google Chrome on Windows, macOS, and Linux systems running versions prior to 149.0.7827.53 are directly vulnerable. The underlying Skia library is also used in other Chromium-based browsers and some third-party applications on these operating systems. Users should verify their Chrome version and check vendor advisories for any derivative products that bundle Skia. The vulnerability impacts both consumer and enterprise Chrome deployments.

Exploitability

The attack requires only a crafted HTML page and user interaction—no special preconditions, authentication, or system-level privileges. An attacker could host the malicious page on a website or deliver it via email/messaging platforms. The low attack complexity and high potential impact make this attractive to threat actors. However, the requirement for a user to visit the webpage (and for Chrome to process the malicious content) introduces a practical delay compared to network worms. Chromium's sandbox isolation may limit post-exploitation reach, but the HIGH CVSS score reflects the severity of the in-process compromise.

Remediation

Update Google Chrome to version 149.0.7827.53 or later immediately. Google typically delivers Chrome security updates automatically, but administrators should verify deployment in enterprise environments. For users unable to update immediately, limiting browsing to trusted sites and disabling JavaScript on untrusted pages offer temporary risk reduction, though these are not substitutes for patching. Review browser policies to ensure automatic updates are enabled and monitor for successful exploitation indicators.

Patch guidance

Deploy Chrome version 149.0.7827.53 or later. For Windows environments, use Group Policy or mobile device management (MDM) solutions to enforce updates across the fleet. macOS users should verify that System Preferences > Software Update reflects the patched version. Linux distributions should check their package managers for the security update. Coordinate patching with business continuity teams to avoid service disruption. Test patching in a non-production environment first if your organization relies on Chrome extensions that may have compatibility concerns with new releases.

Detection guidance

Monitor for unusual Chrome process behavior, including unexpected child processes or system calls indicative of code execution post-compromise. Network detection should focus on identifying users accessing known malicious domains hosting exploit pages. Endpoint Detection and Response (EDR) tools can flag suspicious memory access patterns or Chrome process anomalies. Review browser history logs for visits to untrusted or unusual websites around the time of suspected compromise. Correlate Chrome crashes or restarts with user activity to identify potential exploitation attempts. Alert on any unsigned or suspicious child processes spawned by chrome.exe (Windows) or chrome (macOS/Linux).

Why prioritize this

This vulnerability merits immediate patching prioritization due to the combination of HIGH CVSS severity, ease of exploitation, and the ubiquity of Chrome in enterprise environments. The stack buffer overflow in a graphics library is reliably triggerable and can be weaponized with minimal technical barriers. Although not yet observed in active exploitation (KEV status: not listed), the low barrier to attack and high potential impact justify treating this as a tier-1 remediation target. Organizations with heavy Chrome usage, remote workforce, or heightened phishing risk should prioritize deployment within days rather than weeks.

Risk score, explained

The 8.8 CVSS 3.1 score reflects a critical confluence of factors: network-accessible attack vector (AV:N), low complexity to exploit (AC:L), no privilege elevation required (PR:N), and significant impact to confidentiality, integrity, and availability (C:H/I:H/A:H). Although user interaction is mandated (UI:R) and the scope is unchanged (S:U), the combination yields a HIGH severity rating. The score accurately reflects the real-world danger of a stack corruption flaw in a widely-used application handling untrusted web content. The primary limiting factor is the requirement for a user to visit a malicious webpage rather than passive network exploitation.

Frequently asked questions