Vulnerability · Published Nov 18, 2025 · Assigned by Gallagher
CVE-2025-64734
Low 2.4
In plain English
A low-severity security flaw in T21 Reader from Gallagher. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Official description
Missing Release of Resource after Effective Lifetime (CWE-772) in the T21 Reader allows an attacker with physical access to the Reader to perform a denial-of-service attack against that specific reader, preventing cardholders from badging for entry. This issue affects Command Centre Server: 9.30 prior to vCR9.30.251028a (distributed in 9.30.2881 (MR3)), 9.20 prior to vCR9.20.251028a (distributed in 9.20.3265 (MR5)), 9.10 prior to vCR9.10.251028a (distributed in 9.10.4135 (MR8)), all versions of 9.00 and prior.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Gallagher | T21 Reader | 0 – through 9.009.30 – before vCR9.30.251028a9.20 – before vCR9.20.251028a9.10 – before vCR9.10.251028a |
Weakness: CWE-772 · Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L