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CVE-2017-6026

CRITICAL
9.1
CVSS Score
Published: June 30, 2017 at 02:35 AM UTC
Updated: June 17, 2026 at 01:21 AM UTC
4 products affected across 1 vendorModicon M241 FirmwareModicon M251 FirmwareModicon M241

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Severity
CRITICAL9.1
Exploit prediction
EPSS 32%

Description

A Use of Insufficiently Random Values issue was discovered in Schneider Electric Modicon PLCs Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The session numbers generated by the web application are lacking randomization and are shared between several users. This may allow a current session to be compromised.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Modicon M241 Firmware· Schneider Electric
95%
v ≤ 4.0.3.20
schneider-electric-modicon-m241 (same device)
Modicon M251 Firmware· Schneider Electric
95%
v ≤ 4.0.3.20
schneider-electric-modicon-m251 (same device)
Modicon M241· Schneider Electric
60%
All versions
Modicon M251· Schneider Electric
60%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/97254
x_refsource_MISCThird Party AdvisoryUS Government Resource
Source: [email protected]
https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02
Exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
Source: [email protected]
https://www.exploit-db.com/exploits/45918/

CVSS

9.1CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-330

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