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No exploitation reportedFix available

CVE-2018-4837

No exploitation reported by the sources we read.

  • Published2018-01-25
  • Fixed in3.1
  • WeaknessCWE-400

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 TeleControl Server Basic < V3.1. An attacker with access to the TeleControl Server Basic's webserver (port 80/tcp or 443/tcp) could cause a Denial-of-Service condition on the web server. The remaining functionality of the TeleControl Server Basic is not affected by the Denial-of-Service condition.

Timeline

dates in UTC
  1. 2018-01-2514:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 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-2018-4837?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-4837?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Siemens telecontrol server basic
BranchAffectedFixed in
3.1< 3.13.1

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-18-030-02 CISA1 known affected

    Siemens TeleControl Server Basic

    TeleControl Server Basic: versions prior to V3.1

Full record on NVD

Fix

  1. Update Siemens telecontrol server basic to 3.1
  2. Vendor fix CISA ICSA-18-030-02 · 1 productSiemens recommends that users install the latest version of TeleControl Server Basic.
  3. Vendor fix CISA ICSA-18-030-02 · 1 productFor more information on these vulnerabilities and more detailed mitigation instructions, please see Siemens Security Advisory SSA-65145.
  4. Mitigation from the vendor CISA ICSA-18-030-02 · 1 productIf TeleControl Server Basic is operated in standalone mode, then users can close Port 8000/TCP on the Windows firewall to mitigate vulnerabilities CVE-2018-4835 and CVE-2018-4836.
  5. Mitigation from the vendor CISA ICSA-18-030-02 · 1 productIf TeleControl Server Basic is operated in redundancy mode, then users can use the Windows firewall to restrict access to Port 8000/TCP to the second TeleControl Server Basics' IP address to mitigate vulnerabilities CVE-2018-4835 and CVE-2018-4836.
  6. Mitigation from the vendor CISA ICSA-18-030-02 · 1 productUsers can use the Windows firewall to close Ports 80/TCP and 443/TCP to mitigate vulnerability CVE-2018-4837.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVSS 3.07.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-400read 2026-10-23
  • FIRST EPSSEPSS score2.7 %2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2018-01-25
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2018-4837?

A vulnerability has been identified in TeleControl Server Basic < V3.1. An attacker with access to the TeleControl Server Basic's webserver (port 80/tcp or 443/tcp) could cause a Denial-of-Service condition on the web server. The remaining functionality of the TeleControl Server Basic is not affected by the Denial-of-Service condition.

Is CVE-2018-4837 actively exploited?

Active exploitation of CVE-2018-4837 has not been confirmed. Its EPSS score was 2.7% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-4837?

CVE-2018-4837 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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