CVE-2026-27790

Published Jul 7, 2026 CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Gallagher command Centre
Gallagher high Sec T20 Reader
Gallagher high Sec T20 Reader Multi Tech
Gallagher t20 Alarms Terminal
Gallagher t20 Mifare Terminal
Gallagher t20 Multi Tech Terminal
CPEs cpe:2.3:a:gallagher:command_centre:*:*:*:*:*:*:*:*
cpe:2.3:h:gallagher:high_sec_t20_reader:-:*:*:*:*:*:*:*
cpe:2.3:h:gallagher:high_sec_t20_reader_multi_tech:-:*:*:*:*:*:*:*
cpe:2.3:h:gallagher:t20_alarms_terminal:-:*:*:*:*:*:*:*
cpe:2.3:h:gallagher:t20_mifare_terminal:-:*:*:*:*:*:*:*
cpe:2.3:h:gallagher:t20_multi_tech_terminal:-:*:*:*:*:*:*:*
Vendors & Products Gallagher command Centre
Gallagher high Sec T20 Reader
Gallagher high Sec T20 Reader Multi Tech
Gallagher t20 Alarms Terminal
Gallagher t20 Mifare Terminal
Gallagher t20 Multi Tech Terminal
Type Values Removed Values Added
Title Uncaught Exception in T‑20 Readers Allows Restart, Causing Temporary Denial of Service
Type Values Removed Values Added
Title Uncaught Exception in T‑20 Readers Allows Restart, Causing Temporary Denial of Service
Type Values Removed Values Added
Title Authenticated Operator Triggered Restart Exploits T‑20 Reader Command Centre (Denial of Service)
Type Values Removed Values Added
Title Authenticated Operator Triggered Restart Exploits T‑20 Reader Command Centre (Denial of Service)
Type Values Removed Values Added
Title Authenticated Operator Triggered Restart Denial of Service in Gallagher T‑20 Reader
Type Values Removed Values Added
Title Authenticated Operator Triggered Restart Denial of Service in Gallagher T‑20 Reader
Type Values Removed Values Added
Title Authenticated Operator Can Cause Device Restart, Resulting in Temporary Denial of Service
Type Values Removed Values Added
Title Authenticated Operator Can Cause Device Restart, Resulting in Temporary Denial of Service
Type Values Removed Values Added
Title Temporary Denial of Service via Unhandled Exception on Gallagher T-20 Readers
Type Values Removed Values Added
Title Temporary Denial of Service via Unhandled Exception on Gallagher T-20 Readers
Type Values Removed Values Added
First Time appeared Gallagher
Gallagher t-20 Readers
Vendors & Products Gallagher
Gallagher t-20 Readers
Type Values Removed Values Added
Title Authenticated Operator-Induced Restart Denial of Service in Gallagher T‑20 Readers
Type Values Removed Values Added
Title Authenticated Operator-Induced Restart Denial of Service in Gallagher T‑20 Readers
Type Values Removed Values Added
Title Authenticated Operator Can Trigger Denial of Service by Restarting Gallagher T‑20 Readers
Type Values Removed Values Added
Title Authenticated Operator Can Trigger Denial of Service by Restarting Gallagher T‑20 Readers
Type Values Removed Values Added
Metrics ssvc

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

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'}