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CVE-2018-4858

25
FAUCET Score

CVE-2018-4858 is a vulnerability affecting Siemens IEC 61850 system configurator (all versions < V5.80), DIGSI 5 (all versions < V7.80), DIGSI 4 (all versions < V4.93), SICAM PAS/PQS (all versions < V8.11), SICAM PQ Analyzer (all versions < V3.11), and SICAM SCC (all versions < V9.02 HF3). It allows an attacker to exfiltrate limited data or execute code with Microsoft Windows user permissions by sending a specially crafted network request to services listening on ports 4884/TCP, 5885/TCP, or 5886/TCP. Rated with a CVSS v3.1 score of 7.8 (High), this vulnerability has a local attack vector and requires user interaction. Successful exploitation can lead to high impacts on confidentiality, integrity, and availability, though arbitrary code execution requires pre-planting code on the host. There is no known public exploitation of this vulnerability, and no exploit code is available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage are minimal, indicating a low level of public attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.80CPE matchmatch criteria
cpe:2.3:o:siemens:ec_61850_system_configurator_firmware:*:*:*:*:*:*:*:*
< 3.11CPE matchmatch criteria
cpe:2.3:o:siemens:sicam_pq_analyzer_firmware:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:siemens:sicam_scc_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:siemens:digsi_4_firmware:-:*:*:*:*:*:*:*
< 7.80CPE matchmatch criteria
cpe:2.3:o:siemens:digsi_5_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.84%
Probability of exploitation in next 30 days
EPSS Percentile
76.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0184 is in the 75th percentile among its peer group of 11,617 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cert-portal.siemens.com / productcert/pdf/ssa-159860.pdf
Vendor Advisory
ics-cert.us-cert.gov / advisories/ICSA-18-317-01
Third Party AdvisoryUS Government Resource
securityfocus.com / bid/105933
Third Party AdvisoryVDB Entry