PatchSiren cyber security CVE debrief

CVE-2026-7876 IBM CVE debrief

IBM Aspera HSTS for Cloud Pak for Integration (CP4I) versions 1.5.1 through 1.5.19 contains an improper authentication vulnerability (CWE-287). The vulnerability was published by IBM PSIRT and indexed by NVD on 2026-05-27. No CVSS score or severity rating has been assigned as of the CVE modification time (2026-05-27T14:53:51.833Z); NVD status remains 'Awaiting Analysis'. The affected product is IBM Aspera HSTS, a high-speed transfer server component used within IBM's Cloud Pak for Integration platform. Organizations running affected versions should monitor IBM's security bulletin for patch availability and apply updates when released.

Vendor: IBM
Product: Aspera HSTS for CP4I
CVSS: CRITICAL 9.1
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-05-27
Original CVE updated: 2026-05-28
Advisory published: 2026-05-27
Advisory updated: 2026-05-28

Who should care

Organizations operating IBM Cloud Pak for Integration with Aspera HSTS components, particularly those on versions 1.5.1-1.5.19. Security teams responsible for IBM middleware and file transfer infrastructure. Compliance teams tracking authentication-related vulnerabilities in enterprise integration platforms.

Technical summary

IBM Aspera HSTS (High-Speed Transfer Server) versions 1.5.1 through 1.5.19, as deployed in IBM Cloud Pak for Integration, contains an improper authentication weakness. The specific authentication mechanism affected and attack vector details are not yet available in public sources. Organizations should treat this as a medium-priority monitoring item pending IBM's detailed advisory and NVD analysis completion.

Defensive priority

medium

Recommended defensive actions

Monitor IBM security bulletin for patch release and version guidance
Review Aspera HSTS authentication configurations in CP4I deployments
Prepare inventory of CP4I installations running versions 1.5.1 through 1.5.19
Subscribe to IBM PSIRT notifications for updated CVSS scoring and remediation details

Evidence notes

Vendor identification derived from reference domain analysis (ibm.com) with low confidence flag pending review. CWE-287 (Improper Authentication) assigned by IBM PSIRT as primary weakness. No CVSS vector or CPE criteria available in source data.

Official resources

IBM PSIRT disclosed this vulnerability via their support portal. The CVE record was published and subsequently modified on 2026-05-27. No known exploitation in ransomware campaigns has been reported (CISA KEV: not listed).