CVE-2026-18668: IBM Sterling File Gateway · Protection Mechanism Failure
Affects IBM Sterling File GatewaySource CVE Database V5
Not known to be exploited · CVSS 6.5 Medium.
Data as of 8 Nov 2026, 18:19 UTC
Thin evidence
One scorer or none| CNA (ibm) | CVSS 3.1 | 6.5 |
|---|
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 8 Nov 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 8 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| IBMSterling File Gateway | Affected
| Fixed in– |
CPE configurations (2)
cpe:2.3:a:ibm:sterling_file_gateway:6.2.1.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:sterling_file_gateway:6.2.1.2_1:*:*:*:*:*:*:*
AI-suggested
Until a fix is available, organizations should monitor IBM's advisories for updates and consider implementing network-level protections to detect or prevent downgrade attempts.
Description
IBM Sterling File Gateway versions 6.2.1.0 through 6.2.1.2_1 and 6.2.2.0 through 6.2.2.1_1 contain a vulnerability that allows remote attackers to perform protocol downgrade attacks due to a security misconfiguration. This flaw is identified as a protection mechanism failure (CWE-693). The vulnerability has a medium severity rating with a CVSS score of 6.5.