CVE-2025-62845 in QuRouter
Summary
by MITRE • 03/20/2026
An improper neutralization of escape, meta, or control sequences vulnerability has been reported to affect QHora. If a local attacker gains an administrator account, they can then exploit the vulnerability to cause unexpected behavior.
We have already fixed the vulnerability in the following version: QuRouter 2.6.3.009 and later
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Analysis
by VulDB Data Team • 03/27/2026
This vulnerability represents a critical improper neutralization of escape, meta, or control sequences flaw that affects the QHora component within the QuRouter software ecosystem. The vulnerability stems from insufficient sanitization of input data that contains special characters, escape sequences, or control codes that could be manipulated by malicious actors. Such flaws typically arise when applications fail to properly validate and sanitize user-supplied data before processing or rendering it, creating potential pathways for code injection or command execution attacks. The vulnerability specifically impacts environments where QHora is deployed and could be exploited by local attackers who have already compromised administrative credentials, highlighting the importance of principle of least privilege and comprehensive access controls. This type of vulnerability is classified under CWE-174, which addresses improper neutralization of escape sequences, and aligns with ATT&CK technique T1059.001 for command and script injection. The issue demonstrates how even seemingly benign input handling flaws can become serious security concerns when combined with elevated privileges.
The technical exploitation of this vulnerability occurs when a local attacker with administrative access crafts malicious input containing escape sequences or control characters that bypass normal input validation mechanisms. These sequences can potentially cause the system to interpret the input as commands rather than data, leading to unexpected behavior patterns that may include unauthorized access, privilege escalation, or system instability. The vulnerability's impact is particularly concerning because it requires only local administrative access to exploit, meaning that once an attacker has compromised an administrator account, they can leverage this weakness to perform actions that would otherwise be restricted. The affected QHora component likely processes user input through various channels including configuration files, command interfaces, or data processing pipelines where the lack of proper sanitization creates opportunities for attackers to inject malicious sequences that can trigger unintended system behaviors.
The operational impact of this vulnerability extends beyond simple data corruption or system instability, potentially enabling attackers to gain deeper system access or manipulate critical configuration parameters. When an attacker with administrative privileges exploits this flaw, they can cause the system to behave unpredictably, potentially leading to data loss, unauthorized privilege escalation, or service disruption. The vulnerability's presence in QuRouter versions prior to 2.6.3.009 suggests that organizations running older versions are particularly at risk, as the fix implemented in the newer release addresses the root cause by implementing proper input sanitization and validation mechanisms. This type of vulnerability can be particularly challenging to detect during routine security assessments because the malicious sequences may appear legitimate to the system until they are processed, making it essential for organizations to maintain up-to-date software versions and implement comprehensive input validation across all system components. The remediation through version 2.6.3.009 demonstrates the importance of regular security updates and the need for organizations to maintain current software inventories to ensure protection against known vulnerabilities.
Organizations should implement immediate mitigation strategies including mandatory software updates to QuRouter 2.6.3.009 or later versions to address this vulnerability. Additionally, security teams should conduct comprehensive assessments of all systems running affected versions to identify potential exploitation attempts and verify that the patch has been properly applied. The vulnerability's classification under CWE-174 and its alignment with ATT&CK techniques emphasize the need for defensive measures including input validation, privilege monitoring, and continuous security monitoring to detect anomalous behavior patterns that may indicate exploitation attempts. Organizations should also review their access control policies and ensure that administrative privileges are strictly limited to authorized personnel only, as the vulnerability's exploitation requires elevated access levels to be effective. Regular security training for administrators and system operators is essential to prevent unauthorized access that could lead to exploitation of this and similar vulnerabilities. The remediation process should include thorough testing to ensure that the patch does not introduce compatibility issues while maintaining the security improvements necessary to protect against this specific threat vector.