Vulnerability in Schneider-Electric Modicon M241
CVE-2017-6028
An Insufficiently Protected Credentials issue was discovered in Schneider Electric Modicon PLCs Modicon M241, all firmware versions, and Modicon M251, all firmware versions. Log-in credentials are sent over the network with Base64 encoding leaving them susceptible to sniffing. Sniffed credentials could then be used to log into the web application.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (82.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Schneider-Electric Modicon M241
- Schneider-Electric Modicon M241 Firmware
- Schneider-Electric Modicon M251
- Schneider-Electric Modicon M251 Firmware
- Schneider Electric Modicon Plcs — versions Schneider Electric Modicon PLCs
Weakness classification (CWE)
Public proof-of-concept exploits
References
- ics-cert.us-cert.gov/advisories/ICSA-17-089-02 (US Government Resource, Third Party Advisory)
- www.securityfocus.com/bid/97254 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-6028?
- CVE-2017-6028 is a critical-severity vulnerability in Schneider-Electric Modicon M241, classified under Insufficiently Protected Credentials. CVSS score: 9.8/10. Published 2017-06-30.
- How severe is CVE-2017-6028?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-6028 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.