CVE-2025-49552 is a DOM-based Cross-Site Scripting (XSS) vulnerability identified in Adobe Connect versions 12.9 and earlier. This vulnerability arises from improper handling of untrusted data within the Document Object Model (DOM), allowing an attacker with high privileges to inject malicious scripts that execute in the context of a victim's browser. The attack vector requires the victim to navigate to a crafted malicious web page, implying user interaction is necessary. Successful exploitation can lead to session hijacking, enabling the attacker to assume the victim's session and potentially access sensitive information or perform unauthorized actions within Adobe Connect. The vulnerability affects confidentiality and integrity with high impact, while availability remains unaffected. The scope is changed, indicating the vulnerability affects resources beyond the initially vulnerable component. The CVSS v3.1 base score is 7.3, reflecting a high severity with network attack vector, high attack complexity, required privileges, and user interaction. No patches or known exploits are currently published, but the vulnerability is publicly disclosed and should be addressed promptly. Adobe Connect is widely used for virtual meetings and collaboration, making this vulnerability significant for organizations relying on it for secure communications.

For European organizations, this vulnerability poses a significant risk to the confidentiality and integrity of communications conducted via Adobe Connect. Exploitation could lead to session hijacking, allowing attackers to impersonate legitimate users, access sensitive meeting content, or manipulate collaboration sessions. This is particularly critical for sectors handling sensitive data such as finance, healthcare, government, and critical infrastructure. The requirement for high privileges and user interaction somewhat limits the attack surface but does not eliminate risk, especially in environments where users may be targeted via phishing or social engineering. The change in scope means that the vulnerability could affect multiple components or users beyond the initially targeted system, increasing potential damage. Disruption of trust in remote collaboration tools could also impact operational continuity. Given the widespread adoption of Adobe Connect in Europe, the threat could affect a broad range of organizations, potentially leading to data breaches or espionage.

1. Monitor Adobe’s official channels for patches addressing CVE-2025-49552 and apply them immediately upon release. 2. Until patches are available, restrict Adobe Connect user privileges to the minimum necessary, especially limiting high-privileged accounts. 3. Implement Content Security Policy (CSP) headers to reduce the impact of XSS by restricting script execution sources. 4. Educate users on the risks of clicking unknown or suspicious links, emphasizing the importance of verifying URLs before navigation. 5. Employ web filtering solutions to block access to known malicious or suspicious URLs that could host crafted pages exploiting this vulnerability. 6. Conduct regular security assessments and penetration testing focused on web application security to detect similar vulnerabilities. 7. Enable multi-factor authentication (MFA) on Adobe Connect accounts to reduce the risk of session hijacking. 8. Monitor logs for unusual session activities that could indicate exploitation attempts. 9. Segment network access to Adobe Connect servers to limit exposure and lateral movement in case of compromise.