Description
Uncaught Exception (CWE-248) in the T20 Readers allows an authenticated and authorized operator to trigger a 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.
Published: 2026-07-07
Score: 2.7 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability is caused by an uncaught exception (CWE‑248) that occurs when an authenticated operator sends specific requests to the T‑20 Reader, leading to a system restart and a temporary denial of service. It does not provide code execution, privilege escalation, or other more severe consequences, limiting the impact to brief loss of availability.

Affected Systems

Gallagher T‑20 Readers that run Command Centre versions 9.50 and earlier (up to earlier (up to 9.40.3130), 930.3983), 9.20 and earlier (up to 9.20.4349), and all releases of 9.10 and prior are affected.

Risk and Exploitability

The CVSS score of 2.7 reflects low severity, and the EPSS score of less than 1% indicates that exploitation is unlikely to be widespread. The vulnerability is not listed in the CISA KEV catalog. An attacker must be an authenticated operator with sufficient privileges to issue restart commands, meaning the threat is confined to environments where such permissions are granted.

Generated by OpenCVE AI on July 26, 2026 at 19:38 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the Command Centre to the latest patched release (≥ vCR9.50.260616a for 9.50, vCR9.40.260616a for 9.40, vCR9.30.260616a for 9.30, vCR9.20.260616a for 9.20, or any later version).
  • Re‑evaluate operator authorization scopes and reduce or remove privileges that or of Readers to entities that can send restart requests, thereby reducing the attack surface.
  • Implement network segmentation to isolate T‑20 Readers from critical infrastructure, limiting the impact of a restart.

Generated by OpenCVE AI on July 26, 2026 at 19:38 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 23 Jul 2026 14:15:00 +0000

Type Values Removed Values Added
Title Authenticated Operator Triggered Restart Exploits T‑20 Reader Command Centre (Denial of Service)

Wed, 22 Jul 2026 12:45:00 +0000

Type Values Removed Values Added
Title Authenticated Operator Triggered Restart Exploits T‑20 Reader Command Centre (Denial of Service)

Fri, 17 Jul 2026 09:30:00 +0000

Type Values Removed Values Added
Title Authenticated Operator Triggered Restart Denial of Service in Gallagher T‑20 Reader

Wed, 15 Jul 2026 15:00:00 +0000

Type Values Removed Values Added
Title Authenticated Operator Triggered Restart Denial of Service in Gallagher T‑20 Reader

Mon, 13 Jul 2026 22:00:00 +0000

Type Values Removed Values Added
Title Authenticated Operator Can Cause Device Restart, Resulting in Temporary Denial of Service

Sun, 12 Jul 2026 16:00:00 +0000

Type Values Removed Values Added
Title Authenticated Operator Can Cause Device Restart, Resulting in Temporary Denial of Service

Sat, 11 Jul 2026 21:00:00 +0000

Type Values Removed Values Added
Title Temporary Denial of Service via Unhandled Exception on Gallagher T-20 Readers

Fri, 10 Jul 2026 22:45:00 +0000

Type Values Removed Values Added
Title Temporary Denial of Service via Unhandled Exception on Gallagher T-20 Readers

Fri, 10 Jul 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Gallagher
Gallagher t-20 Readers
Vendors & Products Gallagher
Gallagher t-20 Readers

Fri, 10 Jul 2026 06:45:00 +0000

Type Values Removed Values Added
Title Authenticated Operator-Induced Restart Denial of Service in Gallagher T‑20 Readers

Thu, 09 Jul 2026 11:45:00 +0000

Type Values Removed Values Added
Title Authenticated Operator-Induced Restart Denial of Service in Gallagher T‑20 Readers

Wed, 08 Jul 2026 09:45:00 +0000

Type Values Removed Values Added
Title Authenticated Operator Can Trigger Denial of Service by Restarting Gallagher T‑20 Readers

Tue, 07 Jul 2026 17:15:00 +0000

Type Values Removed Values Added
Title Authenticated Operator Can Trigger Denial of Service by Restarting Gallagher T‑20 Readers

Tue, 07 Jul 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 07 Jul 2026 05:00:00 +0000

Type Values Removed Values Added
Description Uncaught Exception (CWE-248) in the T20 Readers allows an authenticated and authorized operator to trigger a 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.
Weaknesses CWE-248
References
Metrics cvssV3_1

{'score': 2.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L'}

Subscriptions

Gallagher T-20 Readers
cve-icon MITRE

Status: PUBLISHED

Assigner: Gallagher

Published:

Updated: 2026-07-07T13:37:26.913Z

Reserved: 2026-03-01T23:45:09.724Z

Link: CVE-2026-27790

cve-icon Vulnrichment

Updated: 2026-07-07T13:37:22.318Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-26T19:45:03Z

Weaknesses