CVE-2017-9947

MEDIUMNVD 5.35.3—Elevated

5.3

A vulnerability has been identified in Siemens APOGEE PXC and TALON TC BACnet Automation Controllers in all versions

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 92.5%
KEV: Not listed

Published

October 23, 2017

Last Modified

June 2, 2026

References (9)

productcert@siemenshttp://packetstormsecurity.com/files/169544/Siemens-APOGEE-PXC-TALON-TC-Authentication-Bypass.html
productcert@siemenshttp://www.securityfocus.com/bid/101248
productcert@siemenshttps://cert-portal.siemens.com/productcert/pdf/ssa-148078.pdf
productcert@siemenshttps://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-148078.pdf
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/169544/Siemens-APOGEE-PXC-TALON-TC-Authentication-Bypass.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/101248
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-148078.pdf
af854a3a-2127-422b-91ae-364da2661108https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-148078.pdf
134c704f-9b21-4f2e-91b3-4a467353bcc0https://packetstorm.news/files/id/169544

Vendor Advisories for CVE-2017-9947(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-m28r-jg2j-26cv
GitHub Security AdvisoriesMedium
A vulnerability has been identified in Siemens APOGEE PXC and TALON TC BACnet Automation...

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
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Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCRoseSecurity/APOLOGEE
First seen May 26, 2022
APOLOGEE is a Python script and Metasploit module that enumerates a hidden directory on Siemens APOGEE PXC BACnet Automation Controllers (all versions prior to V3.5) and TALON TC BACnet Automation Controllers (all versions prior to V3.5). With a 7.5 CVSS, this exploit allows for an attacker to perform an authentication bypass using an alternate path or channel to access hidden directories in the web server. This repository takes advantage of CVE-2017-9947.
Open source ↗

Frequently asked(5)

What is CVE-2017-9947?

CVE-2017-9947 is a medium vulnerability published on October 23, 2017. A vulnerability has been identified in Siemens APOGEE PXC and TALON TC BACnet Automation Controllers in all versions <V3.5. A directory traversal vulnerability could allow a remote attacker with network access to the integrated web server (80/tcp and 443/tcp) to obtain information on the structure…

When was CVE-2017-9947 disclosed?

CVE-2017-9947 was first published in the National Vulnerability Database on October 23, 2017, with the most recent update on June 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2017-9947 actively exploited?

CVE-2017-9947 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 92.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2017-9947?

CVE-2017-9947 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2017-9947?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-9947, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2017-9947

📅 Published

🔄 Last Modified

🔗 References (9)

📣 Vendor Advisories for CVE-2017-9947(1)