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CVE-2018-13805

23
FAUCET Score

CVE-2018-13805 is a denial-of-service vulnerability affecting Siemens SIMATIC ET 200SP Open Controller and SIMATIC S7-1500 series PLCs. An unauthenticated attacker with network access can send specially crafted packets to disrupt the PLC's network communication. This vulnerability has a CVSS score of 7.5 (High), indicating a severe impact on availability with low attack complexity and no user interaction required. While no public exploits or active exploitation were known at the time of advisory publication, and there is no significant community discussion or media coverage, organizations should still address this vulnerability to prevent potential operational disruptions.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0CPE matchmatch criteria
cpe:2.3:o:siemens:simatic_et_200sp_firmware:*:*:*:*:*:*:*:*
>= 2.0, < 2.5CPE matchmatch criteria
cpe:2.3:o:siemens:simatic_s7-1500_firmware:*:*:*:*:*:*:*:*
>= 2.0, < 2.5CPE matchmatch criteria
cpe:2.3:o:siemens:simatic_s7-1500f_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.53%
Probability of exploitation in next 30 days
EPSS Percentile
72.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0153 is in the 54th percentile among its peer group of 51,553 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

cert-portal.siemens.com / productcert/pdf/ssa-347726.pdf
Vendor Advisory