Missing Release of Resource after Effective Lifetime (CWE-772) in the Gallagher T-Series…
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-772.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Gallagher | T-Series Readers | up to 8.90; 9.20 to before vCR9.20.250213a; 9.10 to before vCR9.10.250213a; 9.00 to before vCR9.00.250619a | vCR9.20.250213a, vCR9.10.250213a, vCR9.00.250619a | Patch available | CNA |
- T-Series Readers VendorGallagher Affected up to 8.90; 9.20 to before vCR9.20.250213a; 9.10 to before vCR9.10.250213a; 9.00 to before vCR9.00.250619a Fixed in vCR9.20.250213a, vCR9.10.250213a, vCR9.00.250619a Patch available CNA
Remediation
- Fix · CNA T-Series Readers (Gallagher) Fixed in vCR9.20.250213a, vCR9.10.250213a, vCR9.00.250619a
Timeline
- 2026-10-02 Threatist record created from CVE-2025-44003
- 2026-10-03 Alias added: GHSA-v8g8-p29x-2m2w
More Gallagher vulnerabilities
- TI-2021-05931 Improper authorization in Gallagher Command Centre CVSS 3.1CRITICAL 9.9
- TI-2020-12668 Improper authentication in Gallagher Command Centre CVSS 3.1CRITICAL 9.8
- TI-2020-12666 Improper authorization in Gallagher Command Centre CVSS 3.1CRITICAL 9.9
- TI-2019-11404 An issue was discovered in Gallagher Command Centre 8.10 before 8.10.1092(MR2). CVSS 3.0CRITICAL 9.8
- TI-2025-30196 Exposure of Sensitive System Information to an Unauthorized Control Sphere (CWE-497) in… CVSS 3.1CRITICAL 9.9
- TI-2023-10202 Controller 6000 buffer overflow via upload feature in web interface CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-44003 · CVE Program
- CVE-2025-44003 · NVD
- FIRST EPSS
- GHSA-v8g8-p29x-2m2w · GitHub Advisory Database · CC BY 4.0
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