Vulnerability · Published Sep 18, 2026 · Assigned by ibm
CVE-2026-75878IBM Sterling File Gateway is Vulnerable to Authentication Bypass
Critical 9.1
In plain English
A critical-severity improper authentication in Sterling File Gateway from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities).
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.6%top 48.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | Sterling File Gateway | 6.2.0.0 – through 6.2.0.6_1, 6.2.1.0 - 6.2.1.2, 6.2.2.0 - 6.2.2.1 |
Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- https://www.ibm.com/support/pages/node/7287497 vendor-advisory, patch