Quick answer
Direct answer
Risk scores
| CVSS metric | What it means |
|---|---|
| Attack vector (AV:L) | Local access needed |
| Attack complexity (AC:L) | Low complexity |
| Privileges required (PR:L) | Low privileges required |
| User interaction (UI:R) | A user must take an action |
| Scope (S:C) | Scope changed: impact spreads beyond the component |
| Confidentiality (C:L) | Low confidentiality impact |
| Integrity (I:H) | High integrity impact |
| Availability (A:H) | High availability impact |
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:H
About Gallagher Active Directory Sync
CVE-2026-25193 affects Gallagher Active Directory Sync, a product from Gallagher. Before acting, confirm where Gallagher Active Directory Sync runs in your estate, who owns it and whether it is reachable from the internet, because exposure decides real risk more than the score alone.
What the flaw is
In plain terms: Insertion of Sensitive Information into Log File (CWE-532) in some Command Centre Service installers could lead to Service Account credentials exposure. Mitigating Factor: Only sites that install Command Centre Services with a custom Service Account (not the default Network Service account) are potentially impacted. Mitigation: For sites concerned about exposure, the recommended action is to change the Service Account password. They can also delete any installer log files, usually found in %programdata%\Gallagher\Command Centre.
Based on its CVSS vector, the flaw needs local or adjacent access, needs some level of access, and relies on a user taking an action. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.
Affected versions and timeline
| Field | Detail |
|---|---|
| Product | Gallagher Active Directory Sync |
| Affected versions | Active Directory Sync before 9.10.05; Cardholder Sync Utility before 9.30.104; Command Centre before 9.40.2575; Diagnostics Service before 2.0.9; Elevator Service before 10.0.8; Encoding Kiosk Application before 9.60.10; Entra Id Sync V1 before 1.0.10; Entra Id Sync V2 before 2.0.5; Event Logger before 8.90.16; Event Sync Utility before 8.70.62; Middleware Framework before 8.90.34; Nexudus Integration before 9.60.21 |
| Published | May 25, 2026 |
| Last modified | Aug 17, 2026 |
| Added to CISA KEV | Not listed |
| Assigning CNA | disclosures@gallagher.com |
How to detect it
- Inventory every instance of Gallagher Active Directory Sync and record the running version against the affected range above.
- Check external attack surface scans for internet facing instances of the component.
- Review logs on affected systems for unusual requests, errors or new processes around the vulnerable function.
- Confirm with an authenticated vulnerability scan once your scanner has a check for this CVE.
How to fix it
- Apply the fixed version of Gallagher Active Directory Sync named in the vendor advisory.
- If patching must wait, restrict network access to the affected service and put it behind authentication or a web application firewall rule.
- Rescan after the change to prove the exposure is gone, then close the ticket.
CTEM action plan
| CTEM stage | What to do for this CVE |
|---|---|
| Scope | Add every business service that depends on Gallagher Active Directory Sync to the current CTEM cycle. |
| Discover | Find all instances, including shadow and cloud deployments, and record versions and exposure. |
| Prioritize | Rank using EPSS and CVSS together with asset exposure and business impact. |
| Validate | Confirm the flaw is reachable and exploitable in your environment and that compensating controls work. |
| Mobilize | Assign the fix to the asset owner with a due date matched to the priority, then verify closure. |
CWE References
Technical References
Frequently asked questions
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