CVE-2025-49460 is a vulnerability categorized under CWE-400, which pertains to uncontrolled resource consumption, affecting Zoom Communications, Inc's Zoom Workplace Clients. This vulnerability allows an unauthenticated attacker to exploit the application via network access to cause a denial of service (DoS) condition. Specifically, the flaw arises because the Zoom Workplace Clients do not properly manage resource allocation when processing certain network requests, enabling an attacker to overwhelm the system's resources such as CPU, memory, or network bandwidth. The vulnerability does not require any prior authentication, making it accessible to any remote attacker who can reach the affected client over the network. The CVSS v3.1 base score is 4.3, indicating a medium severity level. The vector string (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L) shows that the attack is network-based with low attack complexity, no privileges required, and requires user interaction, but only impacts availability without affecting confidentiality or integrity. No known exploits are currently reported in the wild, and no patches have been released yet. The affected versions are not explicitly detailed beyond a placeholder '0', suggesting that the vulnerability may affect all or unspecified versions of Zoom Workplace Clients. The vulnerability's root cause is the failure to control resource consumption, which can lead to service degradation or complete denial of service, disrupting normal operations of the Zoom Workplace Client software.

For European organizations, the impact of this vulnerability could be significant, especially for those relying heavily on Zoom Workplace Clients for internal communications and collaboration. A successful exploitation could lead to denial of service conditions, causing disruption in communication workflows, loss of productivity, and potential delays in critical business operations. While the vulnerability does not compromise data confidentiality or integrity, the availability impact alone can be detrimental, particularly for sectors requiring continuous and reliable communication such as finance, healthcare, government, and critical infrastructure. The requirement for user interaction (UI:R) implies that some form of user action, such as opening a malicious link or file, might be necessary, which could limit the attack surface but still poses a risk in environments with less stringent user awareness or security training. Given the widespread adoption of Zoom products across Europe, even a medium severity DoS vulnerability can have cascading effects on organizational efficiency and service delivery.

To mitigate this vulnerability, European organizations should implement the following specific measures: 1) Monitor network traffic for unusual patterns that could indicate attempts to exploit resource consumption, such as repeated or malformed requests targeting Zoom Workplace Clients. 2) Enforce strict network segmentation and firewall rules to limit exposure of Zoom Workplace Clients to untrusted networks, reducing the attack surface. 3) Educate users about the risks of interacting with unsolicited or suspicious links and attachments that could trigger the vulnerability. 4) Employ endpoint protection solutions capable of detecting anomalous resource usage or potential DoS attempts on client machines. 5) Coordinate with Zoom Communications for timely updates and patches; once available, prioritize patch deployment across all affected clients. 6) Consider implementing rate limiting or connection throttling at network gateways to prevent excessive resource consumption from single sources. 7) Maintain robust incident response plans to quickly identify and remediate any denial of service incidents related to this vulnerability.