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CVE-2018-7798

26
FAUCET Score

CVE-2018-7798 describes an Insufficient Verification of Data Authenticity (CWE-345) vulnerability affecting all versions of Schneider Electric Modicon M221 and SoMachine Basic. This flaw allows an unauthenticated remote attacker to alter the device's IPv4 configuration (IP address, mask, and gateway). With a CVSS v3.1 score of 8.2 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to high integrity impact (configuration changes) and low availability impact. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:schneider-electric:somachine_basic:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.2HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.66%
Probability of exploitation in next 30 days
EPSS Percentile
47.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0066 is in the 24th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

schneider-electric.com / en/download/document/SEVD-2018-270-01
MitigationVendor Advisory
securityfocus.com / bid/105970
Third Party AdvisoryVDB Entry