CVE-2026-1840: CWE-306 Missing authentication for critical function in Hubbell Aclara Metrum Cellular Web Interface
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.
AI Analysis
Technical Summary
CVE-2026-1840 identifies a missing authentication vulnerability (CWE-306) in the Hubbell Aclara Metrum Cellular Web Interface. Critical system functions lack authentication controls, enabling attackers to perform unauthorized configuration changes and system restarts. This vulnerability has a high CVSS 4.0 score of 8.7, indicating network exploitable, no privileges or user interaction required, and high impact on availability. No vendor advisory or patch information is available, and the product is not a cloud service.
Potential Impact
Unauthorized attackers can access and modify critical configuration settings and trigger system restarts without restriction. This can disrupt normal device functionality and, if exploited repeatedly, may cause loss of communication with the device, impacting operational reliability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or workaround is provided, organizations should monitor for updates from Hubbell and consider restricting network access to the affected interface to mitigate unauthorized access risks.
CVE-2026-1840: CWE-306 Missing authentication for critical function in Hubbell Aclara Metrum Cellular Web Interface
Description
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.
CVSS v4.0
Score 8.7high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-1840 identifies a missing authentication vulnerability (CWE-306) in the Hubbell Aclara Metrum Cellular Web Interface. Critical system functions lack authentication controls, enabling attackers to perform unauthorized configuration changes and system restarts. This vulnerability has a high CVSS 4.0 score of 8.7, indicating network exploitable, no privileges or user interaction required, and high impact on availability. No vendor advisory or patch information is available, and the product is not a cloud service.
Potential Impact
Unauthorized attackers can access and modify critical configuration settings and trigger system restarts without restriction. This can disrupt normal device functionality and, if exploited repeatedly, may cause loss of communication with the device, impacting operational reliability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or workaround is provided, organizations should monitor for updates from Hubbell and consider restricting network access to the affected interface to mitigate unauthorized access risks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- icscert
- Date Reserved
- 2026-02-03T16:50:25.254Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3c3ea14853345fc1ce0e33
Added to database: 06/24/2026, 20:31:29 UTC
Last enriched: 06/24/2026, 20:45:59 UTC
Last updated: 06/24/2026, 21:23:30 UTC
Views: 5
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