PatchSiren cyber security CVE debrief

CVE-2026-1840 Hubbell CVE debrief

The Hubbell Aclara Metrum Cellular Web Interface is vulnerable to unauthorized access due to a lack of authentication controls on critical system functions. This weakness allows attackers to alter operational parameters and trigger system restarts without restriction, potentially disrupting normal functionality and leading to a loss of communications to the device. The vulnerability has a CVSS score of 7.5 and is classified as HIGH severity. Hubbell encourages users to update their firmware to v2.1.0.105 to minimize network exposure. The vulnerability was publicly disclosed on June 23, 2026.

Vendor: Hubbell
Product: Aclara Metrum Cellular Web Interface
CVSS: HIGH 7.5
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-23
Original CVE updated: 2026-06-23
Advisory published: 2026-06-23
Advisory updated: 2026-06-23

Who should care

Organizations using the Hubbell Aclara Metrum Cellular Web Interface should prioritize patching this vulnerability to prevent potential disruptions to their operations. Additionally, security teams and IT administrators responsible for industrial control systems should be aware of this vulnerability and take steps to mitigate its impact.

Technical summary

The Aclara Metrum Cellular Web Interface lacks authentication controls on critical system functions, allowing unauthorized access and potential disruptions to normal functionality. The vulnerability has a CVSS score of 7.5 and is classified as HIGH severity. The affected product is Hubbell Aclara Metrum Cellular Web Interface: <v2.1.0.105. Hubbell encourages users to update their firmware to v2.1.0.105 to minimize network exposure and ensure that devices are not accessible from the Internet.

Defensive priority

Patching this vulnerability is a high priority due to its potential impact on operational functionality and the high severity of the vulnerability. Organizations should update their firmware to v2.1.0.105 as soon as possible.

Recommended defensive actions

Update firmware to v2.1.0.105
Minimize network exposure to prevent unauthorized access
Ensure devices are not accessible from the Internet
Monitor system functionality for potential disruptions
Implement additional security controls to detect and prevent exploitation

Evidence notes

The vulnerability was publicly disclosed on June 23, 2026, and has a CVSS score of 7.5. The affected product is Hubbell Aclara Metrum Cellular Web Interface: <v2.1.0.105. Hubbell encourages users to update their firmware to v2.1.0.105 to minimize network exposure.

Official resources

This article is AI-assisted and based on the supplied source corpus.