No exploitation reportedFix available

CVE-2018-4858

Q: Is CVE-2018-4858 actively exploited?

Active exploitation of CVE-2018-4858 has not been confirmed. Its EPSS score was 1.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2018-4858?

CVE-2018-4858 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2018-07-09
WeaknessCWE-284

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 IEC 61850 system configurator (All versions < V5.80), DIGSI 5 (affected as IEC 61850 system configurator is incorporated) (All versions < V7.80), DIGSI 4 (All versions < V4.93), SICAM PAS/PQS (All versions < V8.11), SICAM PQ Analyzer (All versions < V3.11), SICAM SCC (All versions < V9.02 HF3). A service of the affected products listening on all of the host's network interfaces on either port 4884/TCP, 5885/TCP, or port 5886/TCP could allow an attacker to either exfiltrate limited data from the system or to execute code with Microsoft Windows user permissions. Successful exploitation requires an attacker to be able to send a specially crafted network request to the vulnerable service and a user interacting with the service's client application on the host. In order to execute arbitrary code with Microsoft Windows user permissions, an attacker must be able to plant the code in advance on the host by other means. The vulnerability has limited impact to confidentiality and integrity of the affected system. At the time of advisory publication no public exploitation of this security vulnerability was known. Siemens confirms the security vulnerability and provides mitigations to resolve the security issue.

Timeline

dates in UTC

2018-07-0919:29CVE publishedNVD

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-2018-4858?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-4858?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Siemens digsi 4 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Siemens digsi 5 firmwareversion to verify

Branch	Affected	Fixed in	Source
7.80	< 7.80	7.80	NVD

Siemens ec 61850 system configurator firmwareversion to verify

Branch	Affected	Fixed in	Source
5.80	< 5.80	5.80	NVD

3 more products 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-18-317-01 CISA6 known affected
ICSA-18-317-01 Siemens IEC 61850 System Configurator, DIGSI 5, DIGSI 4, SICAM PAS/PQS, SICAM PQ Analyzer, and SICAM SCC
IEC 61850 system configurator · DIGSI 5 (affected as IEC 61850 system configurator is incorporated) · DIGSI 4 · +3 more

Full record on NVD

Fix

Vendor fix CISA ICSA-18-317-01 · 1 productUpdate to V5.80 - Download: https://support.industry.siemens.com/cs/ww/en/view/109740546
Vendor fix CISA ICSA-18-317-01 · 1 productUninstall IEC 61850 system configurator or update to V7.80 - Download: https://support.industry.siemens.com/cs/ww/en/view/109758531
Vendor fix CISA ICSA-18-317-01 · 1 productUpdate to V4.93 - Download: https://support.industry.siemens.com/cs/ww/en/view/109740980
Vendor fix CISA ICSA-18-317-01 · 1 productUpdate to V8.11 - Download: https://support.industry.siemens.com/cs/us/en/view/109757831
Vendor fix CISA ICSA-18-317-01 · 1 productUpdate to V3.11 - Download: https://support.industry.siemens.com/cs/us/en/view/109757833
Vendor fix CISA ICSA-18-317-01 · 1 productUpdate to V9.02 HF3 - Download: https://support.industry.siemens.com/cs/ww/en/view/109745469

Advisories and patches

cert-portal.siemens.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.8read 2026-10-23
NVDCVSS 2.09.3read 2026-10-23
CNAweakness (CWE)CWE-284read 2026-10-23
FIRST EPSSEPSS score1.8 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2018-07-09
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2018-4858?

Is CVE-2018-4858 actively exploited?

Active exploitation of CVE-2018-4858 has not been confirmed. Its EPSS score was 1.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-4858?

CVE-2018-4858 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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