# 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.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Jul 2025
- **Updated:** 10 Jul 2025
- **Also known as:** GHSA-v8g8-p29x-2m2w

## 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 (Missing Release of Resource after Effective Lifetime)

## 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.

## Is CVE-2025-44003 being exploited?

There is no known exploitation of CVE-2025-44003 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-44003 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2025-44003 in the wild and no public exploit code.

Affected product: Gallagher T-Series Readers. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-44003/ (Markdown: https://insights.sbomify.com/CVE-2025-44003/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-44003
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-44003
- OSV: https://osv.dev/vulnerability/CVE-2025-44003

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-44003/
Summaries are generated and may contain mistakes; the official description above is the record.