Siemens SICAM RTUs SM-2556 COM Module up to MODi00 Integrated Web Server access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as critical has been found in Siemens SICAM RTUs SM-2556 COM Module up to MODi00. Affected is an unknown code block of the component Integrated Web Server. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered on Siemens SICAM RTUs SM-2556 COM Modules with the firmware variants ENOS00, ERAC00, ETA2, ETLS00, MODi00, and DNPi00. The integrated web server (port 80/tcp) of the affected devices could allow unauthenticated remote attackers to execute arbitrary code on the affected device.

The bug was discovered 11/14/2017. The weakness was disclosed 11/15/2017 with SEC Consult Vulnerability Lab (Website). The advisory is available at This vulnerability is traded as CVE-2017-12739 since 08/09/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 01/10/2023). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

It is possible to mitigate the weakness by firewalling tcp/80 (Web Services).






CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
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VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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Class: Access control
CWE: CWE-264

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
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Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍


08/09/2017 🔍
11/14/2017 +97 days 🔍
11/14/2017 +0 days 🔍
11/15/2017 +1 days 🔍
11/15/2017 +0 days 🔍
11/16/2017 +1 days 🔍
01/10/2023 +1881 days 🔍



Advisory: ssa-164516
Organization: SEC Consult Vulnerability Lab
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-12739 (🔍)
SecurityFocus: 101884 - Multiple Siemens SICAM RTU Products Multiple Security Vulnerabilities


Created: 11/16/2017 10:27 AM
Updated: 01/10/2023 12:20 PM
Changes: 11/16/2017 10:27 AM (61), 12/06/2019 04:22 PM (5), 01/10/2023 12:20 PM (4)
Complete: 🔍
Cache ID: 100:D22:40


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