Siemens WinCC 5.0/6.0/7.0/7.1/7.2 Encryption Key hard-coded credentials

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability has been found in Siemens WinCC 5.0/6.0/7.0/7.1/7.2 and classified as critical. Affected by this vulnerability is some unknown processing of the component Encryption Key. The manipulation with an unknown input leads to a hard-coded credentials vulnerability. The CWE definition for the vulnerability is CWE-798. The software contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The Project administration application in Siemens SIMATIC WinCC before 7.3, as used in PCS7 and other products, has a hardcoded encryption key, which allows remote attackers to obtain sensitive information by extracting this key from another product installation and then employing this key during the sniffing of network traffic on TCP port 1030.

The weakness was disclosed 07/24/2014 (Website). It is possible to read the advisory at This vulnerability is known as CVE-2014-4686 since 06/28/2014. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1110.001 according to MITRE ATT&CK.

Upgrading to version 7.0 eliminates this vulnerability.

The entries 70446, 70445, 70444 and 70443 are pretty similar.





  • commercial

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Hard-coded credentials
CWE: CWE-798 / CWE-259 / CWE-255
ATT&CK: T1110.001

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: WinCC 7.0


06/28/2014 🔍
07/24/2014 +26 days 🔍
07/24/2014 +0 days 🔍
03/26/2015 +245 days 🔍
03/26/2022 +2557 days 🔍



Advisory: ssa-214365
Status: Not defined
Confirmation: 🔍

CVE: CVE-2014-4686 (🔍)
See also: 🔍


Created: 03/26/2015 12:07 PM
Updated: 03/26/2022 09:09 AM
Changes: 03/26/2015 12:07 PM (49), 03/11/2019 03:22 PM (1), 03/26/2022 09:09 AM (3)
Complete: 🔍


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