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CVE-2016-4784

21
FAUCET Score

CVE-2016-4784 describes a vulnerability in the integrated web server of various Siemens SIPROTEC and EN100 Ethernet module firmware versions, allowing remote attackers to obtain sensitive device information. The vulnerability has a CVSS v3 score of 5.3 (Medium), indicating a low-complexity network attack that does not require user interaction or privileges, resulting in a low impact on confidentiality. While there is no known active exploitation, public exploit code, or inclusion in CISA's KEV catalog, the vulnerability has garnered some community discussion and media coverage. Organizations utilizing affected Siemens products should review and apply available patches to mitigate this information disclosure risk.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:siemens:siprotec_firmware:-:*:*:*:*:*:*:*
4.26CPE matchmatch criteria
cpe:2.3:o:siemens:siprotec_firmware:4.26:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.68%
Probability of exploitation in next 30 days
EPSS Percentile
84.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0268 is in the 77th percentile among its peer group of 23,705 CVEs.

Social Chatter

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

Media Mentions

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

Remediation

Remediation records are not available for this CVE.

References

ics-cert.us-cert.gov / advisories/ICSA-16-140-02
Third Party AdvisoryUS Government Resource
ics-cert.us-cert.gov / advisories/ICSA-17-187-03
siemens.com / cert/pool/cert/siemens_security_advisory_SSA-323211.pdf
securityfocus.com / bid/90773
securityfocus.com / bid/99471
siemens.com / cert/pool/cert/siemens_security_advisory_ssa-547990.pdf
Vendor Advisory