CVE-2019-10939: A vulnerability has been identified in TIM 3V-IE (incl. SIPLUS NET variants) (All versions < V2.8), TIM 3V-IE Advanced (incl. SIPLUS NET variants) (Al...

Description

A vulnerability has been identified in TIM 3V-IE (incl. SIPLUS NET variants) (All versions < V2.8), TIM 3V-IE Advanced (incl. SIPLUS NET variants) (All versions < V2.8), TIM 3V-IE DNP3 (incl. SIPLUS NET variants) (All versions < V3.3), TIM 4R-IE (incl. SIPLUS NET variants) (All versions < V2.8), TIM 4R-IE DNP3 (incl. SIPLUS NET variants) (All versions < V3.3). The affected versions contain an open debug port that is available under certain specific conditions. The vulnerability is only available if the IP address is configured to 192.168.1.2. If available, the debug port could be exploited by an attacker with network access to the device. No user interaction is required to exploit this vulnerability. The vulnerability impacts confidentiality, integrity, and availability of the affected device. At the stage of publishing this security advisory no public exploitation is known.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.12%

61.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-489

Affected Software

Vendor	Product	Versions
Siemens	Tim 3v-Ie Firmware	< 2.8
Siemens	Tim 3v-Ie Advanced Firmware	< 2.8
Siemens	Tim 4r-Ie Firmware	< 3.3
Siemens	Tim 3v-Ie Dnp3 Firmware	< 2.8
Siemens	Tim 4r-Ie Dnp3 Firmware	< 3.3

References

https://cert-portal.siemens.com/productcert/pdf/ssa-359303.pdfVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-359303.pdfVendor Advisory

Timeline

Published: Apr 14, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-10939?

A vulnerability has been identified in TIM 3V-IE (incl. SIPLUS NET variants) (All versions < V2.8), TIM 3V-IE Advanced (incl. SIPLUS NET variants) (All versions < V2.8), TIM 3V-IE DNP3 (incl. SIPLUS NET variants) (All versions < V3.3), TIM 4R-IE (incl. SIPLUS NET variants) (All versions < V2.8), TIM 4R-IE DNP3 (incl. SIPLUS NET variants) (All versions < V3.3). The affected versions contain an open debug port that is available under certain specific conditions. The vulnerability is only available if the IP address is configured to 192.168.1.2. If available, the debug port could be exploited by an attacker with network access to the device. No user interaction is required to exploit this vulnerability. The vulnerability impacts confidentiality, integrity, and availability of the affected device. At the stage of publishing this security advisory no public exploitation is known.

How severe is CVE-2019-10939?

CVE-2019-10939 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.

How do I fix CVE-2019-10939?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.