Siemens APOGEE PXC/TALON TC BACnet up to 3.4 Integrated Web Server improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Siemens APOGEE PXC and TALON TC BACnet up to 3.4. This issue affects some unknown processing of the component Integrated Web Server. Performing a manipulation results in improper authentication. This vulnerability is known as CVE-2017-9946. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Siemens APOGEE PXC and TALON TC BACnet up to 3.4. This affects an unknown functionality of the component Integrated Web Server. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality. The summary by CVE is:

A vulnerability has been identified in Siemens APOGEE PXC and TALON TC BACnet Automation Controllers in all versions <V3.5. An attacker with network access to the integrated web server (80/tcp and 443/tcp) could bypass the authentication and download sensitive information from the device.

The bug was discovered 10/12/2017. The weakness was published 10/23/2017 (Website). The advisory is shared at siemens.com. This vulnerability is uniquely identified as CVE-2017-9946 since 06/26/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 11 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 3.5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 101248†). Similar entry is available at VDB-108586. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: APOGEE PXC/TALON TC BACnet 3.5

Timelineinfo

06/26/2017 🔍
10/12/2017 +108 days 🔍
10/12/2017 +0 days 🔍
10/23/2017 +11 days 🔍
10/23/2017 +0 days 🔍
10/24/2017 +1 days 🔍
06/03/2026 +3143 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-148078
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-9946 (🔍)
GCVE (CVE): GCVE-0-2017-9946
GCVE (VulDB): GCVE-100-108585
SecurityFocus: 101248 - Multiple Siemens Products Authentication Bypass and Directory Traversal Vulnerabilities

See also: 🔍

Entryinfo

Created: 10/24/2017 11:10
Updated: 06/03/2026 00:49
Changes: 10/24/2017 11:10 (62), 11/30/2019 14:02 (4), 01/04/2023 14:12 (4), 06/03/2026 00:49 (28)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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