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CVE-2016-7987

25
FAUCET Score

CVE-2016-7987 is a Denial-of-Service vulnerability affecting Siemens ETA4 firmware (all versions prior to Revision 08) in SM-2558 extension modules for SICAM AK, TM 1703, BC 1703, and AK 3 products. An unauthenticated attacker can send specially crafted packets to TCP Port 2404, causing the device to enter a defect mode and potentially requiring a cold start for recovery. This vulnerability has a CVSS v3 score of 7.5 (HIGH), indicating a network-based attack with low complexity and high impact on availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 07CPE matchmatch criteria
cpe:2.3:o:siemens:eta4_firmware:*:*:*:*:*:*:*:*
<= 11.0CPE matchmatch criteria
cpe:2.3:o:siemens:eta2_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.05%
Probability of exploitation in next 30 days
EPSS Percentile
79.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0205 is in the 63rd percentile among its peer group of 51,455 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

No media coverage found for this CVE.

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

ics-cert.us-cert.gov / advisories/ICSA-16-299-01
MitigationThird Party AdvisoryUS Government Resource
securityfocus.com / bid/93832
Third Party AdvisoryVDB Entry