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high advisory

CVE-2026-8179 - IBM Aspera High-Speed Transfer Endpoint and Server Buffer Overflow

IBM Aspera High-Speed Transfer Endpoint and Server 3.7.4 through 4.4.7 Fix Pack 1 are vulnerable to a buffer overflow in the asperahttpd component, potentially allowing an authenticated user to execute arbitrary code.

IBM Aspera High-Speed Transfer Endpoint and Server, widely used for high-speed data transfer, are susceptible to a critical buffer overflow vulnerability. Specifically, versions 3.7.4 through 4.4.7 Fix Pack 1 of both the Endpoint and Server products contain a flaw within the asperahttpd component. This vulnerability, identified as CVE-2026-8179, could allow an authenticated user with low privileges to execute arbitrary code on the affected system. Given the widespread use of Aspera in data-intensive industries, successful exploitation of this flaw could lead to significant data breaches or system compromise. Defenders should prioritize patching and monitoring for suspicious activity related to the asperahttpd service.

Attack Chain

  1. Attacker gains authenticated access to the Aspera High-Speed Transfer Endpoint or Server.
  2. Attacker crafts a malicious HTTP request targeting the asperahttpd component.
  3. The crafted request exploits the buffer overflow vulnerability (CWE-121) within asperahttpd.
  4. The overflow allows the attacker to overwrite memory regions.
  5. The attacker injects arbitrary code into the memory.
  6. The injected code is executed within the context of the asperahttpd process.
  7. The attacker gains control of the system with the privileges of the asperahttpd service account.
  8. The attacker pivots to other systems or exfiltrates sensitive data.

Impact

Successful exploitation of CVE-2026-8179 can lead to complete system compromise on affected IBM Aspera High-Speed Transfer Endpoint and Server installations. An attacker could leverage this vulnerability to gain unauthorized access to sensitive data, disrupt critical business operations, or use the compromised system as a staging point for further attacks within the network. Given the high base score (8.8), this is considered a critical vulnerability.

Recommendation

  • Immediately upgrade IBM Aspera High-Speed Transfer Endpoint and Server to a version beyond 4.4.7 Fix Pack 1 to patch CVE-2026-8179, as per IBM’s advisory.
  • Monitor network traffic for suspicious HTTP requests targeting the asperahttpd component as described in the attack chain.
  • Deploy the Sigma rule for abnormal processes spawning from the asperahttpd service to detect potential exploitation attempts.
  • Review access controls for the Aspera High-Speed Transfer Endpoint and Server to minimize the attack surface.

Detection coverage 2

Detect CVE-2026-8179 Exploitation — asperahttpd Abnormal Child Processes

high

Detects CVE-2026-8179 exploitation — Monitors for the execution of unusual child processes spawned by the `asperahttpd` service, which could indicate successful code execution following a buffer overflow.

sigma tactics: execution techniques: T1059.004 sources: process_creation, linux

Detect CVE-2026-8179 Attempt — Stacked Exploit Characters in HTTP Headers

medium

Detects CVE-2026-8179 attempt — Monitors for suspicious patterns in HTTP headers that could indicate a buffer overflow attack attempt.

sigma tactics: initial_access techniques: T1190 sources: webserver

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