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 describes 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 weakness can disrupt normal device operations and communication reliability. The vulnerability is remotely exploitable without privileges or user interaction, reflected in its CVSS 4.0 vector (AV:N/AC:L/PR:N/UI:N). No vendor advisory or patch information is currently available.
Potential Impact
Unauthorized attackers can access and modify critical configuration parameters and trigger system restarts without restriction. This can disrupt normal device functionality and, if exploited repeatedly, may cause loss of communications with the device, impacting operational reliability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the affected interface and monitor for unauthorized access attempts.
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 describes 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 weakness can disrupt normal device operations and communication reliability. The vulnerability is remotely exploitable without privileges or user interaction, reflected in its CVSS 4.0 vector (AV:N/AC:L/PR:N/UI:N). No vendor advisory or patch information is currently available.
Potential Impact
Unauthorized attackers can access and modify critical configuration parameters and trigger system restarts without restriction. This can disrupt normal device functionality and, if exploited repeatedly, may cause loss of communications with the device, impacting operational reliability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the affected interface and monitor for unauthorized access attempts.
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: 07/01/2026, 22:42:51 UTC
Last updated: 08/08/2026, 18:31:34 UTC
Views: 98
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