CVE-2025-44003 Denial of service in T-Series Readers
An attacker with physical access can cause a limited denial of service on Gallagher T-Series Readers when 125 kHz Card Technology is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-44003?
CVE-2025-44003 is a medium-severity denial of service vulnerability in Gallagher T-Series Readers, published on 10 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Missing Release of Resource after Effective Lifetime (CWE-772) in the Gallagher T-Series Reader allows an attacker with physical access to the reader to perform a limited denial of service when 125 kHz Card Technology is enabled.
This issue affects T-Series Readers: 9.20 prior to vCR9.20.250213a (distributed in 9.20.1827 (MR2)), 9.10 prior to vCR9.10.250213a (distributed in 9.10.2692(MR5)), 9.00 prior to vCR9.00.250619a (distributed in vEL9.00.3371 (MR7)), all versions of 8.90 and prior.
Weakness: CWE-772
Which versions are affected by CVE-2025-44003?
How do I fix CVE-2025-44003?
No fix has been published for CVE-2025-44003 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-44003 being exploited?
There is no known exploitation of CVE-2025-44003 in the wild and no public exploit code.
Sources
Also known as GHSA-v8g8-p29x-2m2w.