What is CVE-2019-10939?

CVE-2019-10939 is a critical-severity vulnerability in Siemens Tim 3v-Ie, classified under Active Debug Code. CVSS score: 9.8/10. Published 2020-04-14.

How severe is CVE-2019-10939?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Siemens Tim 3v-Ie

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.

EPSS: 0.011 (62.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-489 — Active Debug Code

References

productcert@siemens.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2019-10939?: CVE-2019-10939 is a critical-severity vulnerability in Siemens Tim 3v-Ie, classified under Active Debug Code. CVSS score: 9.8/10. Published 2020-04-14.
How severe is CVE-2019-10939?: Critical severity. CVSS v3 base score is 9.8 out of 10.