Improper authentication in APOGEE PXC and TALON TC BACnet Automation Controllers All…
Priority HIGH 72CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.25437 97th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | APOGEE PXC and TALON TC BACnet Automation Controllers All versions <V3.5 | APOGEE PXC and TALON TC BACnet Automation Controllers All versions <V3.5 | — | No fix listed | CNA |
- APOGEE PXC and TALON TC BACnet Automation Controllers All versions <V3.5 Vendor— Affected APOGEE PXC and TALON TC BACnet Automation Controllers All versions <V3.5 Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:siemens:apogee_pxc_firmware:*:*:*:*:*:*:*:* | before 3.5 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:apogee_pxc:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:apogee_pxc_modular_firmware:*:*:*:*:*:*:*:* | before 3.5 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:apogee_pxc_modular:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:talon_tc_compact_firmware:*:*:*:*:*:*:*:* | before 3.5 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:talon_tc_compact:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:talon_tc_modular_firmware:*:*:*:*:*:*:*:* | before 3.5 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:talon_tc_modular:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:o:siemens:apogee_pxc_firmware:*:*:*:*:*:*:*:* Versions before 3.5 Vulnerable ·Siemens
- cpe:2.3:h:siemens:apogee_pxc:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:apogee_pxc_modular_firmware:*:*:*:*:*:*:*:* Versions before 3.5 Vulnerable ·Siemens
- cpe:2.3:h:siemens:apogee_pxc_modular:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:talon_tc_compact_firmware:*:*:*:*:*:*:*:* Versions before 3.5 Vulnerable ·Siemens
- cpe:2.3:h:siemens:talon_tc_compact:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:talon_tc_modular_firmware:*:*:*:*:*:*:*:* Versions before 3.5 Vulnerable ·Siemens
- cpe:2.3:h:siemens:talon_tc_modular:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-9946
- 2026-10-03 Alias added: GHSA-fgqr-7xrp-hhfh
References
More Siemens Apogee Pxc Firmware vulnerabilities
- TI-2017-07314 Path traversal in APOGEE PXC and TALON TC BACnet Automation Controllers All versions <V3.5 CVSS 3.1MEDIUM 5.3
- TI-2019-10392 Improper input validation in Siemens APOGEE MEC/MBC/PXC CVSS 4.0HIGH 7.1
Sources
- CVE-2017-9946 · CVE Program
- CVE-2017-9946 · NVD
- FIRST EPSS
- GHSA-fgqr-7xrp-hhfh · GitHub Advisory Database · CC BY 4.0
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