CVE-2025-46786 is a medium-severity vulnerability identified in Zoom Communications, Inc's Zoom Workplace Apps. The vulnerability is classified under CWE-74, which pertains to improper neutralization of special elements in output used by a downstream component, commonly known as an injection flaw. Specifically, this vulnerability arises when the application fails to properly sanitize or neutralize special characters or elements in data that is subsequently processed or rendered by another component within the app. An authenticated user can exploit this flaw via network access to impact the integrity of the Zoom Workplace Apps. The CVSS 3.1 base score is 4.3, indicating a medium severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N) reveals that the attack can be performed remotely over the network (AV:N) with low attack complexity (AC:L), does not require privileges (PR:N), but does require user interaction (UI:R). The scope remains unchanged (S:U). The impact affects integrity (I:L) but not confidentiality or availability. No known exploits are currently reported in the wild, and no patches have been linked yet. This vulnerability could allow an attacker to inject malicious content or commands that compromise the app's integrity, potentially leading to unauthorized modifications or manipulations within the app environment. Given the nature of Zoom Workplace Apps as collaboration and communication tools, such integrity issues could undermine trust in communications or lead to further exploitation if chained with other vulnerabilities.

For European organizations, this vulnerability poses a risk primarily to the integrity of communications and collaborative workflows conducted via Zoom Workplace Apps. Since the flaw requires an authenticated user and user interaction, the threat is somewhat mitigated by access controls and user vigilance. However, insider threats or compromised user credentials could enable exploitation. The impact could manifest as unauthorized alteration of app data or behavior, potentially misleading users or disrupting business processes. In sectors with strict regulatory requirements for data integrity and auditability, such as finance, healthcare, and government, this vulnerability could lead to compliance issues or reputational damage if exploited. Additionally, given the widespread use of Zoom in remote work environments across Europe, any integrity compromise could affect operational continuity and trust in digital collaboration platforms. Although no known exploits exist yet, the medium severity and ease of network access mean organizations should proactively address this vulnerability to prevent potential exploitation.

To mitigate this vulnerability effectively, European organizations should: 1) Monitor Zoom Communications' official channels for patches or updates addressing CVE-2025-46786 and apply them promptly once available. 2) Enforce strict access controls and multi-factor authentication (MFA) to reduce the risk of unauthorized authenticated access. 3) Educate users about the risks of interacting with suspicious content or links within Zoom Workplace Apps to minimize the likelihood of user interaction-based exploitation. 4) Implement network segmentation and monitoring to detect unusual activities related to Zoom app usage. 5) Conduct regular security assessments and code reviews if custom integrations with Zoom Workplace Apps exist, ensuring that input validation and output encoding are robust. 6) Employ endpoint detection and response (EDR) solutions to identify potential integrity violations or anomalous behaviors within the app environment. These measures go beyond generic advice by focusing on user behavior, access control, and proactive monitoring tailored to the specifics of this injection vulnerability.