Protocol Downgrade Vulnerability in IBM Sterling File Gateway
CVE-2026-18668

6.5MEDIUM

Key Information:

Vendor

IBM
Status
Sterling File Gateway
Vendor
CVE Published:
8 November 2026

What is CVE-2026-18668?

IBM Sterling File Gateway versions 6.2.1.0 through 6.2.1.2_1 and 6.2.2.0 - 6.2.2.1_1 are susceptible to a protocol downgrade vulnerability. This issue arises from a security misconfiguration that might be exploited by a remote attacker, enabling them to compromise the integrity of communication by forcing the use of less secure protocols. Organizations using affected versions should promptly apply relevant patches to mitigate this potential threat.

Affected Version(s)

Sterling File Gateway 6.2.1.0 <= 6.2.1.2_1, 6.2.2.0 - 6.2.2.1_1

References

https://www.ibm.com/support/pages/node/7294084
vendor-advisorypatch

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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