CVE-2025-11210 is a side-channel information leakage vulnerability identified in Google Chrome versions prior to 141.0.7390.54. The flaw arises from how the browser handles certain UI gestures within tabs, allowing a remote attacker to exploit subtle timing or behavioral differences to leak information. By crafting a malicious HTML page and convincing a user to perform specific UI gestures—such as mouse movements, clicks, or keyboard interactions—the attacker can induce UI spoofing. This spoofing can mislead users by displaying deceptive interface elements, potentially tricking them into divulging sensitive information or performing unintended actions. The vulnerability impacts the confidentiality and integrity of user data but does not affect system availability. Exploitation requires no privileges or prior authentication but does require user interaction, limiting the attack surface. Google has assigned a medium severity rating with a CVSS 3.1 base score of 5.4, reflecting the moderate risk posed by this vulnerability. No known exploits have been reported in the wild, and no official patches or mitigation links were provided at the time of publication. The vulnerability was publicly disclosed on November 6, 2025, with the issue reserved on September 30, 2025.

For European organizations, this vulnerability poses a risk primarily to confidentiality and integrity of information accessed via Google Chrome. Attackers could leverage UI spoofing to trick users into revealing credentials, sensitive corporate data, or performing unauthorized transactions. Sectors such as finance, government, healthcare, and critical infrastructure that rely heavily on Chrome for web access are particularly vulnerable. The requirement for user interaction reduces the likelihood of automated mass exploitation but does not eliminate targeted phishing or social engineering attacks. The absence of availability impact means systems remain operational, but the trustworthiness of user interactions is compromised. Given the widespread use of Chrome across Europe, a successful attack could lead to data breaches, fraud, and reputational damage. Organizations with stringent compliance requirements (e.g., GDPR) may face regulatory consequences if user data confidentiality is compromised.

1. Immediately update all Google Chrome installations to version 141.0.7390.54 or later, where the vulnerability is addressed. 2. Implement enterprise-wide browser update policies to ensure timely patch deployment. 3. Educate users about the risks of interacting with suspicious web content and performing unexpected UI gestures prompted by websites. 4. Employ browser security extensions or enterprise security solutions that can detect and block UI spoofing attempts. 5. Monitor network traffic and user behavior for signs of phishing or social engineering campaigns exploiting this vulnerability. 6. Use multi-factor authentication (MFA) to reduce the impact of credential theft resulting from UI spoofing. 7. Conduct regular security awareness training focusing on recognizing deceptive UI elements and phishing tactics. 8. For high-risk environments, consider restricting browser usage to managed and monitored devices only.