Insufficient verification of data authenticity in Schneider Electric Modicon M221, All…
Priority MEDIUM 43CWE-345Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-345.
Summary
A Insufficient Verification of Data Authenticity (CWE-345) vulnerability exists in the Modicon M221, all versions, which could cause a change of IPv4 configuration (IP address, mask and gateway) when remotely connected to the device.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00655 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Schneider Electric | Modicon M221, All Versions | Modicon M221, All Versions | — | No fix listed | CNA |
- Modicon M221, All Versions VendorSchneider Electric Affected Modicon M221, All Versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:schneider-electric:somachine_basic:*:*:*:*:*:*:*:* | all versions | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m221:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:a:schneider-electric:somachine_basic:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m221:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-7798
- 2026-10-03 Alias added: GHSA-wcc5-wx82-x4gx
- 2026-10-13 EPSS moved to the 50th–90th percentile
References
More Schneider Electric Somachine Basic vulnerabilities
- TI-2020-06012 Injection in SoMachine Basic EcoStruxure Machine Expert – Basic Modicon M100 Logic… CVSS 3.1CRITICAL 9.8
- TI-2018-05659 Uncontrolled resource consumption in SoMachine Basic and Modicon M221, SoMachine Basic… CVSS 3.1HIGH 7.5
- TI-2018-05625 XML external entity injection in Schneider Electric SoMachine Basic CVSS 3.0HIGH 7.5
- TI-2018-05661 A Environment (CWE-2) vulnerability exists in SoMachine Basic, all versions, and Modicon… CVSS 3.1MEDIUM 5.3
- TI-2018-05660 Incorrect default permissions in SoMachine Basic and Modicon M221, SoMachine Basic, all… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2018-7798 · CVE Program
- CVE-2018-7798 · NVD
- FIRST EPSS
- GHSA-wcc5-wx82-x4gx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences