Vulnerability in Gallagher T21 Reader
CVE-2025-64734
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.
EPSS: 0.002 (5.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.4 (Low). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Gallagher T21 Reader — versions 0, 9.30, 9.20
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-64734?
- CVE-2025-64734 is a low-severity vulnerability in Gallagher T21 Reader, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 2.4/10. Published 2025-11-18.
- How severe is CVE-2025-64734?
- Low severity. CVSS v3 base score is 2.4 out of 10.