CVE-2026-20757

Severity: low (CVSS 2.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-03 · updated 2026-08-18
Weakness: CWE-667

Description

Improper Locking vulnerability (CWE-667) in Gallagher Morpho integration allows a privileged operator to cause a limited denial-of-service in the Command Centre Server. This issue affects Command Centre Server: 9.40 prior to vEL9.40.1976(MR1), 9.30 prior to vEL9.30.3382 (MR4), 9.20 prior to vEL9.20.3783 (MR6), 9.10 prior to vEL9.10.4647 (MR9), all versions of 9.00 and prior.

Affected products

Gallagher Command Centre: before 9.10.4647; from 9.20.1043 before 9.20.3783; from 9.30.1594 before 9.30.3382; from 9.40.1359 before 9.40.1976 — fixed in 9.10.4647, 9.20.3783, 9.30.3382, 9.40.1976

How to fix

Upgrade to a fixed version: Gallagher Command Centre 9.10.4647, 9.20.3783, 9.30.3382, 9.40.1976. Check the vendor advisory for mitigations.

References

https://security.gallagher.com/en-NZ/Security-Advisories/CVE-2026-20757

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