CVE-2026-18668
Protection Mechanism Failure vulnerability affects IBM Sterling File Gateway
IBM Sterling File Gateway 6.2.1.0 through 6.2.1.2_1 and 6.2.2.0 - 6.2.2.1_1 could allow a remote attacker to perform protocol downgrade attacks due to a security misconfiguration.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Protection Mechanism Failure vulnerability affects IBM Sterling File Gateway
IBM Sterling File Gateway 6.2.1.0 through 6.2.1.2_1 and 6.2.2.0 - 6.2.2.1_1 could allow a remote attacker to perform protocol downgrade attacks due to a security misconfiguration.
- Record
CVE-2026-18668- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-693
- Updated
- 2026-11-08
EUVDEUVD-2026-119703
IBM Sterling File Gateway 6.2.1.0 through 6.2.1.2_1 and 6.2.2.0 - 6.2.2.1_1 could allow a remote attacker to perform protocol downgrade attacks due to a security misconfiguration.
- Record
EUVD-2026-119703- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - Updated
- 2026-11-08
GitHub AdvisoriesGHSA-rw78-6hvf-24j5
IBM Sterling File Gateway 6.2.1.0 through 6.2.1.2_1 and 6.2.2.0 - 6.2.2.1_1 could allow a remote...
IBM Sterling File Gateway 6.2.1.0 through 6.2.1.2_1 and 6.2.2.0 - 6.2.2.1_1 could allow a remote attacker to perform protocol downgrade attacks due to a security misconfiguration.
- Record
GHSA-rw78-6hvf-24j5- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-693
- Updated
- 2026-11-08
NVD
IBM Sterling File Gateway 6.2.1.0 through 6.2.1.2_1 and 6.2.2.0 - 6.2.2.1_1 could allow a remote attacker to perform protocol downgrade attacks due to a security misconfiguration.
- Record
CVE-2026-18668- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-693
- Updated
- 2026-11-09
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| published | EUVD | |
| published | EUVD, NVD | |
| references, severity, title | CVE List | |
| aliases, products, published, references | EUVD | |
| first indexed | GitHub Advisories |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-18668 is a medium vulnerability (CVSS 6.5) in Ibm Sterling File Gateway, published November 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 24th percentile. No source names a fixed version.