CVE-2026-8175: IBM Aspera High-Speed Transfer Endpoint and Server Buffer Overflow

IBM Aspera High-Speed Transfer Endpoint 3.7.4 through 4.4.7 Fix Pack 1 and IBM Aspera High-Speed Transfer Server 3.7.4 through 4.4.7 Fix Pack 1 are vulnerable to a buffer overflow in the asperahttpd component. This vulnerability, identified as CVE-2026-8175, could allow an attacker to cause a denial of service, bypass authentication, or execute arbitrary code on the affected system. The vulnerability poses a significant risk to organizations using these products for high-speed data transfer, as it could compromise the confidentiality, integrity, and availability of their systems. Successful exploitation can lead to complete system compromise.

Attack Chain

1. Attacker sends a specially crafted HTTP request to the vulnerable asperahttpd component.
2. The asperahttpd component processes the malicious request without proper bounds checking.
3. A buffer overflow occurs due to the oversized data being written to a fixed-size buffer.
4. The buffer overflow overwrites adjacent memory regions, potentially corrupting critical data or code.
5. If the overwritten memory contains executable code, the attacker can redirect control flow to injected code.
6. The injected code executes with the privileges of the asperahttpd process, potentially SYSTEM.
7. Attacker gains unauthorized access to the system and can perform actions such as installing malware or stealing data.
8. The attacker may establish persistence and further compromise the network.

Impact

Successful exploitation of CVE-2026-8175 can lead to a denial of service, authentication bypass, or remote code execution. This vulnerability can allow an attacker to gain complete control of the affected system, potentially leading to data theft, system compromise, or further attacks on the network. Given the critical nature of high-speed data transfer in many organizations, the impact could be significant, affecting sensitive data and business operations.

Recommendation

• Apply the security patches provided by IBM for Aspera High-Speed Transfer Endpoint and Server versions 3.7.4 through 4.4.7 Fix Pack 1 to remediate CVE-2026-8175.
• Deploy the Sigma rule “Detect CVE-2026-8175 Exploitation Attempt - HTTP Request Overflow” to identify malicious HTTP requests targeting the vulnerable asperahttpd component.
• Monitor web server logs for unusual activity or error codes related to buffer overflows, which may indicate exploitation attempts.
• Implement network segmentation to limit the potential impact of a successful exploitation.
• Regularly review and update security policies and procedures to address emerging threats.