GPL Odorizers GPL750 Missing Authentication for Critical Function
Priority MEDIUM 44CWE-306Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
A low-privileged remote attacker can send Modbus packets to manipulate register values that are inputs to the odorant injection logic such that too much or too little odorant is injected into a gas line.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00456 39th percentileScored 2026-11-07
Fix Fixed GPL750 (XL4) (GPL Odorizers): v6.0GPL750 (XL4 Prime) (GPL Odorizers): v6.0+2 more products
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- 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 |
|---|---|---|---|---|---|
| GPL Odorizers | GPL750 (XL4) | v1.0 to before v6.0 | v6.0 | Patch available | CNA |
| GPL Odorizers | GPL750 (XL4 Prime) | v4.0 to before v6.0 | v6.0 | Patch available | CNA |
| GPL Odorizers | GPL Odorizers GPL750 (XL7) | v13.0 to before v20.0 | v20.0 | Patch available | CNA |
| GPL Odorizers | GPL Odorizers GPL750 (XL7 Prime) | v18.4 to before v20.0 | v20.0 | Patch available | CNA |
- GPL750 (XL4) VendorGPL Odorizers Affected v1.0 to before v6.0 Fixed in v6.0 Patch available CNA
- GPL750 (XL4 Prime) VendorGPL Odorizers Affected v4.0 to before v6.0 Fixed in v6.0 Patch available CNA
- GPL Odorizers GPL750 (XL7) VendorGPL Odorizers Affected v13.0 to before v20.0 Fixed in v20.0 Patch available CNA
- GPL Odorizers GPL750 (XL7 Prime) VendorGPL Odorizers Affected v18.4 to before v20.0 Fixed in v20.0 Patch available CNA
Remediation
- Fix · CNA GPL750 (XL4) (GPL Odorizers) Fixed in v6.0
- Fix · CNA GPL750 (XL4 Prime) (GPL Odorizers) Fixed in v6.0
- Fix · CNA GPL Odorizers GPL750 (XL7) (GPL Odorizers) Fixed in v20.0
- Fix · CNA GPL Odorizers GPL750 (XL7 Prime) (GPL Odorizers) Fixed in v20.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-4436
- 2026-10-03 Alias added: GHSA-frgm-v97w-x7w6
References
Sources
- CVE-2026-4436 · CVE Program
- CVE-2026-4436 · NVD
- FIRST EPSS
- GHSA-frgm-v97w-x7w6 · GitHub Advisory Database · CC BY 4.0
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