Missing authentication for critical function in Hubbell Aclara Metrum Cellular Web Interface
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
The Aclara Metrum Cellular Web Interface is vulnerable to unauthorized access due to the absence of authentication controls on critical system functions. This weakness exposes essential configuration settings, allowing attackers to alter operational parameters and trigger system restarts without restriction. Such unauthorized changes can disrupt normal functionality and, if performed repeatedly, may lead to a loss of communications to the device.
Why it matters now
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
Remediation
- Fix · CNA Aclara Metrum Cellular Web Interface (Hubbell) Fixed in 2.1.0.105
Timeline
- 2026-10-02 Threatist record created from CVE-2026-1840
- 2026-10-03 Alias added: GHSA-gx8p-xc64-fg2f
References
Sources
- CVE-2026-1840 · CVE Program
- CVE-2026-1840 · NVD
- FIRST EPSS
- GHSA-gx8p-xc64-fg2f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences