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CVE-2017-9946

37
FAUCET Score

CVE-2017-9946 is an authentication bypass vulnerability affecting Siemens APOGEE PXC and TALON TC BACnet Automation Controllers (all versions <V3.5). An unauthenticated attacker with network access to the integrated web server (ports 80/tcp and 443/tcp) could exploit this flaw to download sensitive information from the device. Rated 7.5 HIGH on CVSS, this vulnerability has a low attack complexity and high confidentiality impact, but no integrity or availability impact. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.5CPE matchmatch criteria
cpe:2.3:o:siemens:apogee_pxc_firmware:*:*:*:*:*:*:*:*
< 3.5CPE matchmatch criteria
cpe:2.3:o:siemens:apogee_pxc_modular_firmware:*:*:*:*:*:*:*:*
< 3.5CPE matchmatch criteria
cpe:2.3:o:siemens:talon_tc_compact_firmware:*:*:*:*:*:*:*:*
< 3.5CPE matchmatch criteria
cpe:2.3:o:siemens:talon_tc_modular_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
25.00%
Probability of exploitation in next 30 days
EPSS Percentile
97.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2500 is in the 96th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstorm.news / files/id/169544
packetstormsecurity.com / files/169544/Siemens-APOGEE-PXC-TALON-TC-Authentication-Bypass.html
ExploitThird Party AdvisoryVDB Entry
cert-portal.siemens.com / productcert/pdf/ssa-148078.pdf
Vendor Advisory
siemens.com / cert/pool/cert/siemens_security_advisory_ssa-148078.pdf
Broken LinkVendor Advisory
securityfocus.com / bid/101248
Broken LinkThird Party AdvisoryVDB Entry