CVE-2026-10935: Chrome V8 Type Confusion Remote Code Execution (CVSS 8.8)

Technical summary

CVE-2026-10935 is a type confusion vulnerability (CWE-843) in the V8 JavaScript engine used by Google Chrome. Type confusion occurs when an attacker manipulates how the engine interprets data types, allowing arbitrary code execution within the browser sandbox. The vulnerability is triggered via a specially crafted HTML page delivered to the victim. Attack complexity is low, requiring only network access and user interaction. The vulnerability affects all platforms where Chrome runs, including Windows, macOS, and Linux-based systems. Google has assigned this a High severity rating within the Chromium security framework.

Business impact

For organizations, this vulnerability creates risk across any environment where users browse the web with affected Chrome versions. While sandboxed execution limits direct system compromise, successful exploitation could lead to theft of sensitive data (credentials, intellectual property, personal information), session hijacking, or lateral movement if combined with other vulnerabilities. Remote workforce and BYOD environments are particularly exposed if Chrome auto-update is disabled or delayed. Incident response teams should assume that any user visiting untrusted websites during the vulnerability window could be compromised.

Affected systems

Google Chrome versions prior to 149.0.7827.53 are vulnerable on all supported platforms: Windows, macOS, and Linux. The vulnerability exists in the V8 engine, which is also embedded in other Chromium-based browsers (Edge, Opera, Brave, etc.), though this CVE specifically references Chrome. Organizations should verify whether other Chromium derivatives in use are similarly affected by checking vendor advisories. The vulnerability does not directly affect the Linux kernel or macOS/Windows operating systems themselves, but rather the browser application running on those platforms.

Exploitability

Exploitability is moderate to high in real-world conditions. The attack requires user interaction (visiting a malicious webpage), which attackers can achieve through phishing, malicious advertisements, or compromised websites. Attack complexity is low; no special privileges, authentication, or user-side configuration is required beyond the browser visiting the attacker's page. The vulnerability is not known to be actively exploited in the wild as of the modification date, and it has not been added to CISA's Known Exploited Vulnerabilities (KEV) catalog. However, type confusion bugs are well-understood attack primitives, and proof-of-concept development is feasible for motivated attackers.

Remediation

Users and administrators must update Google Chrome to version 149.0.7827.53 or later. Chrome typically auto-updates, but administrators should verify deployment in managed environments. For organizations running older Chrome versions, immediate patching is recommended given the high CVSS score and user-facing attack surface. Additionally, organizations should enforce Chrome auto-update policies and educate users to avoid untrusted websites and email links. Browser isolation or sandbox technologies may provide defense-in-depth but should not substitute for patching.

Patch guidance

Update Chrome to 149.0.7827.53 or later via Settings > About Chrome (auto-update) or manual download from google.com/chrome. For enterprise environments, use Google Admin Console or your mobile device management (MDM) platform to push updates across managed devices. Verify the update has taken effect by checking chrome://version. Consider scheduling mandatory updates during maintenance windows to minimize user disruption. For devices unable to auto-update, manual intervention or policy enforcement is required; document any exceptions.

Detection guidance

Network detection: Monitor for HTTP requests to known malicious domains hosting Chrome exploits; anomalous JavaScript payloads sent to browsers; unusual post-exploitation lateral movement or data exfiltration. Endpoint detection: Log Chrome process crashes or abnormal child process spawning (sandbox escapes); monitor for suspicious scripts in user profiles or temp folders. Behavioral detection: Alert on users accessing high-risk external websites or clicking suspicious links followed by Chrome crashes or unusual network activity. Log Chrome version via endpoint inventory to identify unpatched systems. Check browser extensions and installed applications for signs of post-exploitation persistence.

Why prioritize this

This vulnerability merits immediate prioritization due to high CVSS score (8.8), high confidentiality/integrity/authentication impact, low attack complexity, and widespread deployment of Chrome. The attack surface is large—any user browsing the web is a potential victim. While sandboxed execution provides some mitigation, successful exploitation can compromise sensitive user data and create entry points for further attacks. The lack of current public exploitation does not reduce urgency; proactive patching prevents future campaigns targeting this flaw.

Risk score, explained

CVSS 3.1 score of 8.8 reflects a HIGH severity vulnerability with high impact across confidentiality, integrity, and availability (C:H/I:H/A:H). Attack vector is network (AV:N), attack complexity is low (AC:L), no privileges required (PR:N), and user interaction is required (UI:R). Scope is unchanged (S:U), meaning the vulnerability is confined to the affected component. The score appropriately reflects the real-world danger: widespread exposure, easy exploitation, and significant potential harm to users.

Frequently asked questions