CVE-2025-3495 in COMMGR
Summary
by MITRE • 04/16/2025
Delta Electronics COMMGR v1 and v2 uses insufficiently randomized values to generate session IDs (CWE-338). An attacker could easily brute force a session ID and load and execute arbitrary code.
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Analysis
by VulDB Data Team • 04/16/2025
Delta Electronics COMMGR versions 1 and 2 contain a critical vulnerability classified under CWE-338 which addresses the use of insufficiently randomized values in security-sensitive contexts. This weakness specifically manifests in the session ID generation mechanism where the system fails to employ cryptographically secure random number generation techniques. The vulnerability stems from the implementation of pseudo-random number generators that lack adequate entropy sources, making the generated session identifiers predictable and susceptible to brute force attacks. Security researchers have identified that attackers can exploit this flaw to predict valid session tokens and subsequently gain unauthorized access to the system. The operational impact of this vulnerability extends beyond simple session hijacking as it enables full system compromise through arbitrary code execution capabilities. When an attacker successfully brute forces a session ID, they can load and execute malicious code within the application environment, potentially leading to complete system takeover. This weakness directly violates fundamental security principles outlined in the OWASP Top Ten 2021, specifically addressing the use of weak cryptography and improper session management. The vulnerability aligns with ATT&CK technique T1566 which covers social engineering tactics and can be leveraged for initial access. Organizations using Delta Electronics COMMGR v1 and v2 systems face significant risk of unauthorized access and data compromise. The predictable nature of session IDs means that even with basic network monitoring tools, attackers can systematically test potential session tokens. This vulnerability demonstrates poor adherence to security standards such as NIST SP 800-90A which mandates the use of cryptographically secure random number generators for security-sensitive operations. The lack of proper entropy in session ID generation creates a window of opportunity for automated attack tools to systematically enumerate valid sessions. The threat landscape for this vulnerability is particularly concerning as it requires minimal computational resources to execute successful attacks. This weakness also intersects with other security domains including credential stuffing attacks and session fixation vulnerabilities. Organizations should immediately implement mitigations including updating to patched versions of the software, implementing additional authentication layers, and monitoring for suspicious session activity. The vulnerability highlights the importance of following established security frameworks and implementing proper random number generation practices in all security-sensitive applications. Without proper remediation, this vulnerability creates persistent exposure to both automated and manual attack vectors. Security teams must also consider the broader implications of weak session management on overall system integrity and implement comprehensive monitoring solutions to detect potential exploitation attempts. The attack surface expands significantly when considering that session IDs are often used for privilege escalation and lateral movement within compromised environments.