CVE-2026-26053 Gallagher CVE debrief

Who should care

Security teams and administrators responsible for Gallagher Command Centre Server installations should assess and mitigate this vulnerability. They should review the current configurations, apply patches or updates to affected versions, and monitor for suspicious activity. Additionally, they should review and adjust user privileges to prevent unauthorized actions.

Technical summary

The Command Centre Server is affected by an Incorrect Privilege Assignment vulnerability, which allows an authenticated operator with limited privileges to perform unauthorized operations. Affected versions include 9.50 prior to vEL9.50.1587(MR1), 9.40 prior to vEL9.40.3130(MR3), 9.30 prior to vEL9.30.3983(MR5), 9.20 prior to vEL9.20.4349(MR7), and all versions of 9.10. The vulnerability has a CVSS score of 5.3, indicating medium severity. The issue arises from incorrect privilege assignments, allowing operators to perform actions beyond their intended privileges.

Defensive priority

Medium priority given the CVSS score of 5.3 and the potential for unauthorized actions.

Recommended defensive actions

• Inventory and assess Gallagher Command Centre Server installations for vulnerability
• Apply patches or updates to affected versions
• Monitor for suspicious activity
• Review and adjust user privileges
• Implement compensating controls
• Review security advisories for additional guidance
• Track remediation progress and verify fixes

Evidence notes

Evidence is based on official CVE and NVD records, as well as a security advisory from Gallagher. Further details about affected versions and patches are needed. The vulnerability has a CVSS score of 5.3, indicating medium severity. Gallagher Command Centre Server versions 9.50 prior to vEL9.50.1587(MR1), 9.40 prior to vEL9.40.3130(MR3), 9.30 prior to vEL9.30.3983(MR5), 9.20 prior to vEL9.20.4349(MR7), and all versions of 9.10 are affected. Limited information is available about potential exploits or attacks.

Official resources