CVE-2026-0634 is a vulnerability identified in the AssistFeedbackService component of the TECNO Pova7 Pro 5G smartphone, specifically those running HiOS V15.1.0. The root cause is improper neutralization of argument delimiters in command execution, classified under CWE-88 (Improper Neutralization of Argument Delimiters in a Command, also known as argument injection). This flaw allows a local application to inject malicious command arguments that the AssistFeedbackService executes with system-level privileges. By exploiting this vulnerability, an attacker with local app installation capability can execute arbitrary code as the system user, effectively gaining full control over the device. The vulnerability does not require user interaction once the malicious app is installed, and no authentication barriers prevent exploitation. Although no known exploits are currently reported in the wild, the potential for abuse is significant due to the elevated privileges granted upon exploitation. The vulnerability is specific to the TECNO Pova7 Pro 5G device running the specified HiOS version, limiting the affected population but posing a critical risk to those users. The lack of a CVSS score means severity must be inferred from the impact and exploitability characteristics. The vulnerability was reserved in early 2026 and published in April 2026, with no patch links currently available, indicating that users remain at risk until a vendor fix is released.

The primary impact of CVE-2026-0634 is the potential for local privilege escalation on affected TECNO Pova7 Pro 5G devices. An attacker who can install a local app can leverage this vulnerability to execute arbitrary code with system privileges, bypassing Android's application sandbox and security controls. This can lead to full device compromise, including unauthorized access to sensitive data, installation of persistent malware, disabling security features, and potentially using the device as a foothold for further attacks on connected networks. The vulnerability undermines confidentiality, integrity, and availability of the device. Since the exploit requires local app installation but no user interaction or authentication, it could be abused by malicious apps distributed via third-party app stores or through social engineering. Organizations relying on these devices for sensitive communications or operations face risks of data breaches and operational disruption. The limited device scope reduces global impact but is critical for users in regions where TECNO devices are prevalent.

To mitigate CVE-2026-0634, TECNO Mobile must develop and distribute a security patch that properly sanitizes and neutralizes command arguments in the AssistFeedbackService to prevent injection. Until a patch is available, users should avoid installing apps from untrusted or unknown sources to reduce the risk of local app-based exploitation. Organizations deploying TECNO Pova7 Pro 5G devices should enforce strict mobile device management (MDM) policies restricting app installation and monitor device behavior for signs of compromise. Security teams should educate users about the risks of sideloading apps and encourage use of official app stores only. Additionally, employing runtime application self-protection (RASP) or endpoint detection and response (EDR) solutions on mobile devices can help detect anomalous command execution attempts. Regularly checking for vendor updates and applying patches promptly once released is critical. Network segmentation and limiting device access to sensitive systems can reduce broader organizational impact.