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CVE-2024-49396 Elvaco CVE debrief

CVE-2024-49396 is a HIGH severity vulnerability (CVSS 7.5) in the Elvaco M-Bus Metering Gateway CMe3100, published on 2024-10-17 and last modified on 2024-11-14. The vulnerability stems from insufficiently protected credentials in the affected product, which may allow an attacker to impersonate Elvaco and transmit false information. The CISA advisory (ICSA-24-291-01) was initially published on 2024-10-17 and updated on 2024-11-14 to include additional mitigation information. According to the vendor, the remaining identified vulnerabilities require authentication to exploit, posing less immediate risk, though an additional security update is planned. Users of affected versions should contact Elvaco customer support for remediation guidance.

Vendor
Elvaco
Product
CMe3100
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2024-10-17
Original CVE updated
2024-11-14
Advisory published
2024-10-17
Advisory updated
2024-11-14

Who should care

Organizations operating Elvaco CMe3100 M-Bus Metering Gateway devices in utility, building automation, or industrial metering environments; ICS security teams responsible for M-Bus infrastructure; and critical infrastructure operators relying on accurate metering data for billing or operational decisions.

Technical summary

The Elvaco CMe3100 M-Bus Metering Gateway contains a vulnerability where credentials are insufficiently protected, enabling attackers to impersonate the vendor and inject false information into the system. The CVSS 3.1 score of 7.5 reflects network accessibility with low attack complexity, no required privileges or user interaction, and high impact to integrity. The vendor has indicated that remaining vulnerabilities require authentication, reducing immediate risk, and is developing additional security updates.

Defensive priority

HIGH

Recommended defensive actions

  • Contact Elvaco customer support for affected product versions to obtain security update information and remediation guidance
  • Monitor for additional security updates from Elvaco addressing remaining authenticated vulnerabilities
  • Review and implement CISA ICS recommended practices for securing industrial control systems
  • Apply network segmentation and access controls to limit exposure of M-Bus Metering Gateway devices
  • Ensure strong authentication mechanisms are enforced for all administrative access to affected devices

Evidence notes

Vulnerability description and remediation details sourced from CISA CSAF advisory ICSA-24-291-01. CVSS 3.1 vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. Affected product confirmed as Elvaco CMe3100 version 1.12.1. Vendor assessment that remaining issues require authentication per Update A (2024-11-14).

Sources and references

Verified primary and authoritative sources

  • CVE-2024-49396 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-49396

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2024-49396 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-49396

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2024/icsa-24-291-01.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-291-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ncas/tips/ST04-014

    Reference

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.