CVE-2026-75878: IBM Sterling File Gateway · Improper Authentication
Affects IBM Sterling File GatewaySource CVE Database V5
Not known to be exploited · CVSS 9.1 Critical.
Data as of 2 Nov 2026, 10:58 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 50% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 18 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| IBMSterling File Gateway | Affected
| Fixed in– |
Ibmibm/sterling_file_gatewaypkg:rpm/ibm/sterling_file_gatewayOther threats | Affected
| Fixed in– |
CPE configurations (2)
cpe:2.3:a:ibm:sterling_file_gateway:6.2.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:sterling_file_gateway:6.2.0.6_1:*:*:*:*:*:*:*
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until a fix is released, restrict access to the affected version and monitor for suspicious activity related to authentication bypass attempts.
Description
CVE-2026-75878 is a critical vulnerability in IBM Sterling File Gateway version 6.2.0.0 that allows remote attackers to bypass authentication by exploiting improper validation of an SSO header. This flaw enables attackers to obtain a fully authenticated session without valid credentials.