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CVE-2018-13804

24
FAUCET Score

CVE-2018-13804 is an authentication bypass vulnerability affecting various versions of Siemens SIMATIC IT LMS, Production Suite, and UA Discrete Manufacturing. An attacker with network access and a valid username can bypass application-level authentication without requiring user privileges or interaction. This high-severity vulnerability (CVSS 8.1) could lead to a complete compromise of confidentiality, integrity, and availability. Currently, there is no known public exploitation, no available exploit code in common repositories, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:siemens:simatic_it_line_monitoring_system:*:*:*:*:*:*:*:*
v7.1CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_it_production_suite:v7.1:*:*:*:*:*:*:*
<= v1.2CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_it_ua_discrete_manufacturing:*:*:*:*:*:*:*:*
v1.3CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_it_ua_discrete_manufacturing:v1.3:*:*:*:*:*:*:*
v2.3CPE matchmatch criteria
cpe:2.3:a:siemens:simatic_it_ua_discrete_manufacturing:v2.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.66%
Probability of exploitation in next 30 days
EPSS Percentile
84.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0266 is in the 42nd percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 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

cert-portal.siemens.com / productcert/pdf/ssa-886615.pdf
Vendor Advisory
securityfocus.com / bid/105924
Third Party AdvisoryVDB Entry