IBM Sterling FG Auth Bypass via Unvalidated SSO Header
CVE-2026-75878 Published on September 18, 2026
IBM Sterling File Gateway is Vulnerable to Authentication Bypass
IBM Sterling File Gateway could allow a remote attacker to bypass authentication and obtain a fully authenticated session due to improper authentication via an unvalidated SSO header.
Vulnerability Analysis
CVE-2026-75878 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is an authentification Vulnerability?
When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.
CVE-2026-75878 has been classified to as an authentification vulnerability or weakness.
Products Associated with CVE-2026-75878
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Affected Versions
IBM Sterling File Gateway:- Version 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 is affected.