EUVD-2026-32496
GHSA-gwr3-hqj9-gxmf
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Heap buffer bounds checking
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
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Alert meAnalysisAIv1 – May 27, 2026
Remote code execution and authentication bypass are possible in IBM Aspera High-Speed Transfer Server and High-Speed Transfer Endpoint (versions 3.7.4 through 4.4.7 Fix Pack 1) through a heap-based buffer overflow in the asperahttpd component. An unauthenticated network attacker can corrupt memory to crash the service (denial of service) and, in the worst case, hijack execution flow to run arbitrary code or bypass authentication. There is no public exploit identified at time of analysis and SSVC lists exploitation as none, but the CVSS 9.8 rating and 'Automatable: yes' assessment mark this as a high-priority patching target.
Affected VersionsENISA
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
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 and IBM Aspera High-Speed Transfer Endpoint are affected by a buffer overflow in the asperahttpd component. This vulnerability could be exploited to cause a denial of service and potentially lead to authentication bypass or remote code execution.
Executive ViewAI
IBM Aspera High-Speed Transfer Server and Endpoint (versions 3.7.4 through 4.4.7 Fix Pack 1) contain a critical remote code execution vulnerability allowing unauthenticated attackers to compromise system integrity, steal data, and bypass authentication controls without any vendor patch currently available. This creates immediate operational risk to any organization relying on these transfer systems for business-critical file operations. Affected infrastructure requires urgent containment pending patch availability.
24 hours: Complete inventory of all IBM Aspera deployments identifying affected versions (3.7.4-4.4.7 Fix Pack 1); immediately implement network access controls restricting connectivity to asperahttpd services. 7 days: Deploy intrusion detection rules, disable non-essential remote management, enable full audit logging on Aspera components, and restrict administrative access. 30 days: Subscribe to IBM security advisories for patch notification; establish upgrade plan to 4.4.8 or later once released; prepare isolated test environment for patch validation prior to production deployment.
No vendor-released patch identified at time of analysis. Interim mitigations include: (1) Network segmentation and firewall rules limiting access to asperahttpd (default port 9092); (2) Disable remote administration if operationally feasible; (3) Deploy IDS/IPS signatures targeting buffer overflow attacks on Aspera services; (4) Implement enhanced monitoring and alerting for abnormal process behavior or memory corruption indicators; (5) If business-critical operations allow, isolate or shutdown affected systems; (6) Establish incident response procedures for post-exploitation detection; (7) Monitor CISA KEV, IBM advisories, and threat intelligence feeds for weaponization indicators.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
A heap overflow occurs when a program writes data beyond the bounds of a buffer allocated in the heap memory region.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Exploit-DB