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Public proof of conceptFix available

CVE-2017-9947

A public proof of concept exists; no exploitation attested.

  • Published2017-10-23
  • Fixed in3.5
  • WeaknessCWE-22 · CWE-538

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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 of the file system of the affected devices.

Timeline

dates in UTC
  1. 2017-10-2308:29CVE publishedNVD
  2. 2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-9947?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-9947?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Siemens apogee pxc firmwareversion to verify
BranchAffectedFixed in
3.5< 3.53.5
Siemens apogee pxc modular firmwareversion to verify
BranchAffectedFixed in
3.5< 3.53.5
Siemens talon tc compact firmwareversion to verify
BranchAffectedFixed in
3.5< 3.53.5

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-17-285-05 CISA6 known affected

    Siemens BACnet Field Panels (Update A)

    APOGEE PXC Compact (BACnet) · APOGEE PXC Compact (P2 Ethernet) · APOGEE PXC Modular (BACnet) · +3 more

Full record on NVD

Fix

  1. Update Siemens apogee pxc firmware to 3.5
  2. Vendor fix CISA ICSA-17-285-05 · 4 productsUpdate to V3.5 or later version
  3. Mitigation from the vendor CISA ICSA-17-285-05 · 2 productsDisable the integrated webserver
  4. Mitigation from the vendor CISA ICSA-17-285-05 · 6 productsSiemens recommends to disable the integrated webserver when not in use
  5. Mitigation from the vendor CISA ICSA-17-285-05 · 6 productsPlease contact your local Siemens office for additional support
  6. No fix planned, says the vendor CISA ICSA-17-285-05 · 2 productsCurrently no fix is planned

Advisories and patches

Detection

read 2026-10-23 19:23 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
1 repository, unverifiedRoseSecurity/APOLOGEE
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionpoc2026-06-02
  • OpenCVESSVC decisionpoc—
  • CISA-ADPCVSS 3.15.32026-06-02
  • NVDCVSS 3.15.3read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-538read 2026-10-23
  • NVDweakness (CWE)CWE-22read 2026-10-23
  • FIRST EPSSEPSS score8.3 %2026-10-22
  • PoC-in-GitHubproof of concept1read 2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Published
2017-10-23
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2017-9947?

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 of the file system of the affected devices.

Is CVE-2017-9947 actively exploited?

A proof-of-concept exploit exists for CVE-2017-9947, but active exploitation has not been confirmed at this time.

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

CVE-2017-9947 has a CVSS v3 base score of 5.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

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