Quick answers
- Is CVE-2026-18668 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18668 being exploited in the wild.
- How severe is CVE-2026-18668?
- Medium severity, with a CVSS score of 6.5, published 8 November 2026.
- Which products and versions are affected?
- IBM Sterling File Gateway 6.2.1.0 through 6.2.1.2_1, 6.2.2.0 through 6.2.2.1_1.
- Is there a fix for CVE-2026-18668?
- Yes: fixed in Sterling File Gateway 6.2.1.3, 6.2.2.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-18668 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-18668?
- Check whether you run IBM Sterling File Gateway at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: Sterling File Gateway 6.2.1.3, 6.2.2.2
Technical details
The vulnerability is a protection mechanism failure (CWE-693) caused by security misconfiguration that enables protocol downgrade attacks. It affects versions 6.2.1.0 through 6.2.1.2_1 and 6.2.2.0 through 6.2.2.1_1, with network-based attack vector requiring no authentication or privileges. An attacker can downgrade the protocol to weaker encryption standards, compromising confidentiality and integrity of transmitted data.
Affected products
- IBM Sterling File Gateway 6.2.1.0 through 6.2.1.2_1, 6.2.2.0 through 6.2.2.1_1
Timeline
- 2026-10-26: disclosed