CVE-2025-8206 is a cross-site scripting (XSS) vulnerability identified in Comodo Dragon browser versions up to 134.0.6998.179. The vulnerability resides in the IP DNS Leakage Detector component, which is responsible for detecting potential DNS leaks that could compromise user privacy. The flaw allows an attacker to inject malicious scripts remotely, potentially executing arbitrary code in the context of the victim's browser session. However, exploitation complexity is high, requiring specific conditions to be met, and no privileges or authentication are required. User interaction is necessary, as the victim must visit a crafted malicious webpage or link to trigger the vulnerability. The vulnerability has been publicly disclosed, but no patches or vendor responses have been provided. The CVSS v4.0 base score is 2.3, indicating a low severity primarily due to the high attack complexity, lack of privilege requirement, and limited impact on confidentiality and availability. The vulnerability does not affect confidentiality or availability but has a limited impact on integrity, as it allows script injection that could lead to session hijacking or phishing attacks. No known exploits are currently observed in the wild, but the public disclosure increases the risk of future exploitation attempts.

For European organizations, the impact of this vulnerability is relatively limited but should not be dismissed. Organizations using Comodo Dragon as a browser, especially in privacy-sensitive environments, could face targeted phishing or session hijacking attacks leveraging this XSS flaw. The vulnerability could be exploited to steal session cookies, manipulate web content, or conduct social engineering attacks. While the overall risk is low due to the high complexity and required user interaction, sectors handling sensitive data such as finance, healthcare, and government could be more concerned. Additionally, organizations with remote or hybrid workforces might see increased exposure if employees use vulnerable versions of Comodo Dragon. The lack of vendor response and patch availability means organizations must rely on mitigation strategies until an official fix is released. The vulnerability does not pose a direct threat to critical infrastructure or cause system-wide disruptions but could be a vector for targeted attacks against specific users or groups.

Given the absence of an official patch, European organizations should implement the following specific mitigations: 1) Immediately audit and identify all instances of Comodo Dragon browser usage within the organization and restrict its use where possible, especially in high-risk environments. 2) Educate users about the risks of clicking on unknown or suspicious links, emphasizing the need for caution with links received via email or messaging platforms. 3) Employ web filtering solutions to block access to known malicious URLs and implement Content Security Policy (CSP) headers on internal web applications to reduce the impact of potential XSS attacks. 4) Monitor network traffic for unusual DNS queries or suspicious activity that might indicate exploitation attempts targeting the IP DNS Leakage Detector component. 5) Consider deploying endpoint protection tools capable of detecting script injection or anomalous browser behavior. 6) Encourage users to switch to alternative, actively maintained browsers until Comodo releases a security update addressing this vulnerability. 7) Maintain up-to-date backups and incident response plans to quickly respond to any successful exploitation attempts.