CVE-2017-6868
An Improper Authentication issue was discovered in Siemens SIMATIC CP 44x-1 RNA, all versions prior to 1.4.1.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An Improper Authentication issue was discovered in Siemens SIMATIC CP 44x-1 RNA, all versions prior to 1.4.1. An unauthenticated remote attacker may be able to perform administrative actions on the Communication Process (CP) of the RNA series module, if network access to Port 102/TCP is available and the configuration file for the CP is stored on the RNA's CPU.
- CVSS 3.0
- 8.1 HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.17% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- siemens/simatic cp 44x-1 redundant network access modules
- Source
- ics-cert@hq.dhs.gov
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/99234Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038788Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-17-173-01Third Party Advisory, US Government Resource
- https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-126840.pdf
- http://www.securityfocus.com/bid/99234Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038788Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-17-173-01Third Party Advisory, US Government Resource
- https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-126840.pdf
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.