Is CVE-2018-4841 actively exploited?

No active exploitation of CVE-2018-4841 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-4841 be exploited remotely?

Yes. CVE-2018-4841 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-4841?

CVE-2018-4841 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2018-4841

CWE-303Published: March 29, 2018· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A vulnerability has been identified in TIM 1531 IRC (All versions < V1.1). A remote attacker with network access to port 80/tcp or port 443/tcp could perform administrative operations on the device without prior authentication. Successful exploitation could allow to cause a denial-of-service, or read and manipulate data as well as configuration settings of the affected device. At the stage of publishing this security advisory no public exploitation is known. Siemens provides mitigations to resolve it.

NVD Source

Technical Analysis

CVE-2018-4841 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.