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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00227.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Gallagher T-20 Readers unaffected
Version Status Constraints
0 affected ≤ 9.10
9.50 affected < vCR9.50.260616a
9.40 affected < vCR9.40.260616a
9.30 affected < vCR9.30.260616a
9.20 affected < vCR9.20.260616a

No data.

No data.

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Vendors Products
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T-20 Readers Subscribe

Project Subscriptions

Vendors Products
Gallagher Subscribe
T-20 Readers Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://security.gallagher.com/en-NZ/Security-Advisories/CVE-2026-27790 cve-icon
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'}

Projects

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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