CVE-2025-61736 in iSTAR eX
Summary
by MITRE • 12/17/2025
Successful exploitation of this vulnerability could result in the product failing to re-establish communication once the certificate expires.
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Analysis
by VulDB Data Team • 12/20/2025
This vulnerability represents a critical failure in certificate management and secure communication protocols within affected systems. The issue manifests when products fail to properly re-establish secure communication channels after certificate expiration events, creating a window of potential security exposure. From a cybersecurity perspective, this vulnerability directly impacts the integrity and availability of secure network communications, as the system's ability to maintain authenticated connections becomes compromised once certificates reach their expiration dates.
The technical flaw stems from inadequate certificate renewal mechanisms and insufficient fallback procedures within the affected software implementations. When certificates expire, the system should automatically initiate certificate renewal processes or gracefully transition to alternative authentication methods. However, this vulnerability indicates that such mechanisms are either absent, improperly configured, or fail during critical transition phases. The failure typically occurs at the cryptographic handshake level where secure communication protocols like tls or ssl rely on valid certificates to establish trust relationships between communicating parties.
The operational impact of this vulnerability extends beyond simple service disruption to encompass potential data exposure and man-in-the-middle attack opportunities. Once communication channels fail to re-establish properly after certificate expiration, attackers may exploit this gap to intercept or manipulate communications between systems. This vulnerability particularly affects environments where continuous secure communication is critical such as financial services, healthcare systems, or industrial control networks where communication failures can cascade into larger operational disruptions. The vulnerability aligns with CWE-295 which addresses improper certificate validation and CWE-310 which covers cryptographic issues related to key management and certificate handling.
From an attack perspective, this vulnerability maps to multiple ATT&CK techniques including TA0006 Credential Access through certificate manipulation and TA0005 Defense Evasion by creating opportunities for attackers to bypass security controls. The attack surface expands when considering that certificate expiration often occurs during maintenance windows or periods of reduced monitoring, providing adversaries with optimal conditions for exploitation. Organizations may experience service degradation or complete communication failures that can go undetected for extended periods, particularly in environments where certificate monitoring is not adequately implemented.
Mitigation strategies should focus on implementing robust certificate lifecycle management processes including automated certificate renewal mechanisms, proper monitoring and alerting for approaching expiration dates, and redundant communication pathways. Organizations should deploy certificate monitoring solutions that can detect expiration events and trigger automated renewal processes. Additionally, system administrators should implement certificate pinning strategies and maintain backup communication channels that can operate independently of the primary certificate infrastructure. The remediation approach should include comprehensive testing of certificate renewal procedures in controlled environments before deployment to production systems. Security teams must also establish incident response procedures specifically addressing certificate expiration events to minimize the impact of potential exploitation windows.