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CVE-2025-64734
- Severity: low (CVSS 2.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-11-18 · updated 2026-10-18
- Weakness: CWE-772
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
- Gallagher T21 Reader: through 9.00; from 9.30 before vCR9.30.251028a; from 9.20 before vCR9.20.251028a; from 9.10 before vCR9.10.251028a — fixed in vCR9.10.251028a, vCR9.20.251028a, vCR9.30.251028a
How to fix
Upgrade to a fixed version: Gallagher T21 Reader vCR9.10.251028a, vCR9.20.251028a, vCR9.30.251028a. Check the vendor advisory for mitigations.
References
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