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VulnerabilityPublished

CVE-2026-75878: IBM Sterling File Gateway · Improper Authentication

Affects IBM Sterling File GatewaySource CVE Database V5

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Not known to be exploited · CVSS 9.1 Critical.

Data as of 2 Nov 2026, 10:58 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
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:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
IBMSterling File GatewayAffected
  • =6.2.0.0
Fixed in–
Ibmibm/sterling_file_gatewaypkg:rpm/ibm/sterling_file_gatewayOther threatsAffected
  • =6.2.0.0
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.

References

Community reviews

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