Insufficiently Protected Credentials in Elvaco M-Bus Metering Gateway CMe3100

published 2024-10-17 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-43423

cvss: 8.7; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits: 0; none known

The affected product is vulnerable due to insufficiently protected credentials, which may allow an attacker to impersonate Elvaco and send false information.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-24-291-01 updated 2024-11-14 cvss 7.5

Elvaco M-Bus Metering Gateway CMe3100 (Update A)

Elvaco CMe3100 1.12.1
affected: vendor fix, mitigation elvaco.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-10-17)

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

Elvaco M-Bus Metering Gateway CMe3100
elvaco cme3100_firmware

Classification

Weakness

CWE-522 Insufficiently Protected Credentials

References

cisa.gov /news-events/ics-advisories/icsa-24-291-01
government-resource

Sources

CVE List CVE-2024-49396
NVD CVE-2024-49396

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary