PatchSiren cyber security CVE debrief

CVE-2026-8175 IBM CVE debrief

A critical buffer overflow vulnerability in IBM Aspera High-Speed Transfer Endpoint and Server versions 3.7.4 through 4.4.7 Fix Pack 1 affects the asperahttpd component. The vulnerability, classified as CWE-122 (Heap-based Buffer Overflow), carries a CVSS 3.1 score of 9.8 (Critical) due to network attack vector with low complexity, no privileges required, and no user interaction needed. Successful exploitation could result in denial of service, authentication bypass, or remote code execution. The vulnerability was published to NVD on May 27, 2026 and remains under analysis. IBM has published a security bulletin with remediation guidance. Organizations should prioritize patching given the critical severity and potential for unauthenticated remote code execution.

Vendor: IBM
Product: Aspera High-Speed Transfer Endpoint
CVSS: CRITICAL 9.8
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-05-27
Original CVE updated: 2026-05-27
Advisory published: 2026-05-27
Advisory updated: 2026-05-27

Who should care

Organizations running IBM Aspera High-Speed Transfer Endpoint or Server for managed file transfer operations; security teams responsible for critical infrastructure protection; compliance officers tracking unauthenticated RCE exposure in data transfer systems

Technical summary

The asperahttpd component in IBM Aspera High-Speed Transfer Endpoint and Server contains a heap-based buffer overflow (CWE-122) in versions 3.7.4 through 4.4.7 Fix Pack 1. The vulnerability is remotely exploitable without authentication or user interaction. Impact ranges from service disruption to complete system compromise via remote code execution. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) reflects maximum impact across confidentiality, integrity, and availability dimensions.

Defensive priority

critical

Recommended defensive actions

Apply IBM Aspera High-Speed Transfer Endpoint/Server 4.4.7 Fix Pack 1 or later security update per vendor bulletin
If immediate patching is not feasible, restrict network access to asperahttpd service to trusted administrative hosts only
Monitor asperahttpd process crashes or unexpected authentication events as potential exploitation indicators
Review IBM security bulletin for additional configuration-based mitigations
Validate endpoint and server inventory to identify affected versions 3.7.4 through 4.4.7 Fix Pack 1

Evidence notes

Vulnerability description sourced from NVD official record. CVSS vector confirms network-accessible attack with no authentication barriers. IBM PSIRT reference provides vendor acknowledgment. CPE criteria not yet populated in NVD feed; version range derived from description text.

Official resources

2026-05-27