CVE-2018-13807

Severity: high (CVSS 8.6 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-09-12 · updated 2026-06-17
Weakness: CWE-20

Description

A vulnerability has been identified in SCALANCE X300 (All versions < V4.0.0), SCALANCE X408 (All versions < V4.0.0), SCALANCE X414 (All versions). The web interface on port 443/tcp could allow an attacker to cause a Denial-of-Service condition by sending specially crafted packets to the web server. The device will automatically reboot, impacting network availability for other devices. An attacker must have network access to port 443/tcp to exploit the vulnerability. Neither valid credentials nor interaction by a legitimate user is required to exploit the vulnerability. There is no confidentiality or integrity impact, only availability is temporarily impacted. This vulnerability could be triggered by publicly available tools.

Affected products

Siemens Scalance X300 Firmware: before 4.0.0 — fixed in 4.0.0
Siemens Scalance X408 Firmware: before 4.0.0 — fixed in 4.0.0
Siemens Scalance X414 Firmware: all versions

How to fix

Upgrade to a fixed version: Siemens Scalance X300 Firmware 4.0.0; Siemens Scalance X408 Firmware 4.0.0. Check the vendor advisory for mitigations.

References

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