CVE-2026-75878CWE-287

CVE-2026-75878

Critical · published September 19, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
50.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00644 · 50.2th percentile
Weakness
CWE-287 · Improper Authentication
Published
2026-09-19T00:17Z
References (1)
https://www.ibm.com/support/pages/node/7287497 · [email protected]
EPSS history
Timeline
  • 20 SEP 03:24Z
    EPSS moved — → 0%
    epss
  • 18 SEP 19:22Z
    IBM Sterling File Gateway is Vulnerable to Authentication Bypass
    cvelistv5