CVE-2025-62484 is a vulnerability identified in Zoom Communications Inc.'s Zoom Workplace client software versions before 6.5.10. The root cause is inefficient regular expression complexity (CWE-1333), which can be exploited by an unauthenticated attacker over the network to escalate privileges. This inefficiency likely leads to excessive processing time or resource consumption when parsing certain inputs, enabling an attacker to manipulate the system into granting higher privileges than intended. The attack vector is network-based with no authentication required, but user interaction is necessary, suggesting that the attacker may need to trick a user into triggering the vulnerable code path. The vulnerability affects confidentiality and integrity by potentially allowing unauthorized access or modification of sensitive data or system settings, but it does not impact availability. The CVSS v3.1 score of 8.1 indicates a high-severity issue with low attack complexity and no privileges required. No public exploits have been reported yet, but the vulnerability's nature and ease of exploitation make it a significant risk. Zoom Workplace is widely used for enterprise collaboration, making this vulnerability a critical concern for organizations relying on this platform for secure communications.

For European organizations, this vulnerability poses a significant risk to the confidentiality and integrity of internal communications and data managed through Zoom Workplace. An attacker exploiting this flaw could gain elevated privileges, potentially accessing sensitive corporate information, manipulating meeting content, or disrupting secure workflows. Given the widespread use of Zoom in Europe for remote work, education, and government communications, exploitation could lead to data breaches, espionage, or loss of trust in communication infrastructure. Organizations in sectors such as finance, healthcare, government, and critical infrastructure are particularly vulnerable due to the sensitive nature of their communications. The lack of availability impact reduces the risk of denial-of-service but does not diminish the threat to data security and user privacy. The requirement for user interaction means social engineering or phishing could be used to trigger the exploit, increasing the attack surface.

European organizations should immediately verify their Zoom Workplace client versions and upgrade all instances to version 6.5.10 or later, where the vulnerability is patched. Network monitoring should be enhanced to detect unusual patterns indicative of exploitation attempts, such as anomalous regular expression processing or unexpected privilege escalations. Implement strict endpoint security controls to prevent unauthorized execution of malicious payloads that could trigger the vulnerability. Conduct user awareness training focused on recognizing and avoiding social engineering tactics that might lead to user interaction with malicious inputs. Employ application whitelisting and restrict network access to Zoom Workplace clients to trusted sources only. Regularly audit and review Zoom Workplace configurations and logs for signs of compromise. Coordinate with Zoom support and subscribe to security advisories for timely updates. Consider deploying network-level intrusion prevention systems (IPS) with signatures targeting this vulnerability once available.