CVE-2026-27844 Denial of service in Controller 7000 and 6000

What is CVE-2026-27844?

CVE-2026-27844 is a low-severity denial of service vulnerability in Gallagher Controller 7000 and 6000, published on 7 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Uncaught Exception (CWE-248) in the Controller 6000 and Controller 7000 diagnostic web interface allows an authenticated and authorized operator to trigger a Controller restart by sending specific requests, resulting in a temporary denial of service.  Version of Command Centre affected:

* 9.50 prior to vCR9.50.260616a (distributed in 9.50.1587(MR1)) * 9.40 prior to vCR9.40.260616a (distributed in 9.40.3130(MR3)) * 9.30 prior to vCR9.30.260616a (distributed in 9.30.3983(MR5)) * 9.20 prior to vCR9.20.260616a (distributed in 9.20.4349(MR7)) * all versions of 9.10 and prior.

Weakness: CWE-248

Which versions are affected by CVE-2026-27844?

It affects 1 product.

Products include Gallagher Command Centre.

How do I fix CVE-2026-27844?

No fix has been published for CVE-2026-27844 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-27844 being exploited?

There is no known exploitation of CVE-2026-27844 in the wild and no public exploit code.

Other vulnerabilities in Gallagher Controller 7000 and 6000

• CVE-2021-23140 Missing authorization in Command Centre Critical 9.9
• CVE-2021-23230 SQL injection in Command Centre Critical 9.9
• CVE-2020-16096 Missing authorization in Command Centre Critical 9.9
• CVE-2020-16098 Information disclosure in Command Centre Critical 9.8
• CVE-2019-15294 Information disclosure in n/a Critical 9.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-2c5j-956x-xmg8.