CVE-2026-1840

Missing authentication for critical function in Hubbell Aclara Metrum Cellular Web Interface

Published Jun 24, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

Hubbell encourages users to update their firmware to v2.1.0.105 in order to minimize network exposure and ensure that devices are not accessible from the Internet. Users can download version 2.1.0.105 from AclaraConnect https://aclara.my.site.com/AclaraConnect/s/ .

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Hubbell
Hubbell aclara Metrum Cellular Web Interface
Vendors & Products Hubbell
Hubbell aclara Metrum Cellular Web Interface
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Missing authentication for critical function in Hubbell Aclara Metrum Cellular Web Interface
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Jun 25, 2026, 1:14 PM
Reserved
Feb 3, 2026, 4:50 PM
Status
Deferred
Published
Jun 24, 2026, 9:16 PM
Modified
Oct 25, 2026, 10:10 PM