CVE-2026-2846 is an OS command injection vulnerability identified in the UTT HiPER 520 device, version 1.7.7-160105. The flaw exists in the Web Management Interface, specifically within the function sub_44D264 handling requests to /goform/formPdbUpConfig. The vulnerability is triggered by manipulating the 'policyNames' parameter, which is not properly sanitized before being passed to an OS command execution context. This allows a remote attacker to inject arbitrary commands that the operating system will execute with the privileges of the web management interface process. The attack vector is network-based and does not require authentication or user interaction, making it highly exploitable remotely. The vulnerability affects confidentiality, integrity, and availability, as attackers can execute commands that may lead to data theft, system modification, or denial of service. The CVSS 4.0 vector indicates no privileges required (PR:H means high privileges required, but the description states no authentication needed, so this may be a discrepancy), no user interaction, and high impact on all security properties. Although no public patches are currently available, the exploit code has been publicly disclosed, increasing the urgency for mitigation. The vulnerability is categorized as high severity with a CVSS score of 8.6, reflecting the critical nature of the flaw. Organizations using UTT HiPER 520 should urgently assess exposure and implement mitigations or updates once available.

The impact of CVE-2026-2846 is significant for organizations using UTT HiPER 520 devices, especially those relying on the Web Management Interface for device configuration and management. Successful exploitation allows remote attackers to execute arbitrary OS commands, potentially leading to full system compromise. This can result in unauthorized data access, modification or deletion of critical configuration files, disruption of device functionality, and pivoting to other internal network resources. Given the device's role in network management, compromise could lead to broader network outages or facilitate further attacks within an organization's infrastructure. The lack of authentication requirement and remote exploitability increases the attack surface and risk. Organizations in sectors such as telecommunications, critical infrastructure, government, and enterprises using these devices are particularly vulnerable. The public disclosure of exploit code raises the likelihood of active exploitation attempts, increasing urgency for remediation.

1. Immediately isolate affected UTT HiPER 520 devices from untrusted networks to reduce exposure. 2. Monitor network traffic and logs for suspicious activity targeting the /goform/formPdbUpConfig endpoint or unusual command execution patterns. 3. Apply any available vendor patches or firmware updates as soon as they are released. 4. If patches are not yet available, implement network-level controls such as firewall rules or access control lists to restrict access to the Web Management Interface to trusted administrators only. 5. Employ web application firewalls (WAFs) with custom rules to detect and block injection attempts targeting the 'policyNames' parameter. 6. Conduct thorough audits of device configurations and logs to detect any signs of compromise. 7. Consider temporary disabling or restricting the Web Management Interface if feasible until a patch is applied. 8. Educate network administrators about the vulnerability and ensure they follow best practices for secure device management. 9. Engage with UTT support channels to obtain official guidance and updates. These steps go beyond generic advice by focusing on immediate containment, monitoring, and access restriction tailored to the specific vulnerable component and attack vector.