CVE-2017-6034
Summary
| CVE | CVE-2017-6034 |
|---|---|
| State | PUBLISHED |
| Assigner | icscert |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-06-30 03:29:00 UTC |
| Updated | 2026-05-28 20:16:19 UTC |
| Description | An Authentication Bypass by Capture-Replay issue was discovered in Schneider Electric Modicon Modbus Protocol. Sensitive information is transmitted in cleartext in the Modicon Modbus protocol, which may allow an attacker to replay the following commands: run, stop, upload, and download. |
Risk And Classification
Primary CVSS: v3.1 9.8 CRITICAL from ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.000980000 probability, percentile 0.268780000 (date 2026-06-02)
Problem Types: CWE-294 | CWE-287 | CWE-294 CWE-294
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | DECLARED | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.0 | [email protected] | Primary | 9.8 | CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
PartialAvailability
PartialAV:N/AC:L/Au:N/C:P/I:P/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Hardware | Schneider-electric | Modbus | - | All | All | All |
| Operating System | Schneider-electric | Modbus Firmware | - | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Na | Schneider Electric Modicon Modbus Protocol | affected Schneider Electric Modicon Modbus Protocol | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Schneider Electric Modicon Modbus Protocol Multiple Authentication Bypass Vulnerabilities | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| Schneider Electric Modicon Modbus Protocol | ICS-CERT | af854a3a-2127-422b-91ae-364da2661108 | ics-cert.us-cert.gov | Third Party Advisory, US Government Resource |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 590766 Schneider Electric Modicon Controllers and SCADAPack RTU Vulnerability (SEVD-2017-065-01)