Authentication Bypass Vulnerability in IBM Sterling File Gateway
CVE-2026-75878

9.1CRITICAL

Key Information:

Vendor

IBM
Status
Sterling File Gateway
Vendor
CVE Published:
18 September 2026

What is CVE-2026-75878?

A serious security flaw in IBM Sterling File Gateway enables remote attackers to bypass authentication measures by exploiting an unvalidated SSO header. This vulnerability allows unauthorized users to gain access to fully authenticated sessions, potentially compromising sensitive information and disrupting service integrity.

Affected Version(s)

Sterling File Gateway 6.2.0.0 <= 6.2.0.6_1, 6.2.1.0 - 6.2.1.2, 6.2.2.0 - 6.2.2.1

References

https://www.ibm.com/support/pages/node/7287497
vendor-advisorypatch

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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