CVE-2018-13807
A vulnerability has been identified in SCALANCE X300 (All versions < V4.0.0), SCALANCE X408 (All versions < V4.0.0), SCALANCE X414 (All versions).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 8.6 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- EPSS
- 4.18% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- siemens/scalance x408 firmware · siemens/scalance x300 firmware · siemens/scalance x414 firmware
- Source
- productcert@siemens.com
EPSS 4.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/105331Third Party Advisory, VDB Entry
- https://cert-portal.siemens.com/productcert/pdf/ssa-447396.pdfVendor Advisory
- https://ics-cert.us-cert.gov/advisories/ICSA-18-254-05Third Party Advisory, US Government Resource, VDB Entry
- http://www.securityfocus.com/bid/105331Third Party Advisory, VDB Entry
- https://cert-portal.siemens.com/productcert/pdf/ssa-447396.pdfVendor Advisory
- https://ics-cert.us-cert.gov/advisories/ICSA-18-254-05Third Party Advisory, US Government Resource, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.