CVE-2017-9946: siemens apogee_pxc_firmware Improper Authentication
Vulnerability summary
CVE-2017-9946 is a high (CVSS 7.5) Improper Authentication vulnerability in siemens apogee_pxc_firmware. EPSS estimates a 25.00% chance of exploitation in the next 30 days, higher than 97.8% of scored vulnerabilities. 2 public exploits are recorded.
Timeline
- 23-10-2017PublishedVulnerability first disclosed.
- 02-06-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
25.00%
Chance of exploitation in the next 30 days
Percentile
98%
Versus all other CVEs
30-day change
0.00 pp
From 25.00% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundExploit Reference (packetstorm.news)
Maturity: unknown
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Siemens4 products
1 vendor · 4 products
References
5 links- cert-portal.siemens.com/productcert/pdf/ssa-148078.pdfVendor Advisory
- packetstormsecurity.com/files/169544/Siemens-APOGEE-PXC-TALON-TC-Authentication-Bypass.htmlExploitThird Party AdvisoryVDB Entry