HOMEVULNERABILITIESCVE-2019-10939
CRITICAL

CVE-2019-10939

CWE-489Published: April 14, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2019-10939 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.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

siemens10 product(s)
tim 3v-ie firmwaretim 3v-ietim 3v-ie advanced firmwaretim 3v-ie advancedtim 4r-ie firmwaretim 4r-ietim 3v-ie dnp3 firmwaretim 3v-ie dnp3tim 4r-ie dnp3 firmwaretim 4r-ie dnp3
Source: NVD CPE · 10 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://cert-portal.siemens.com/productcert/pdf/ssa-359303.pdf
ADVISORYhttps://cert-portal.siemens.com/productcert/pdf/ssa-359303.pdf

All References (2)

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

Quick Facts

CVE IDCVE-2019-10939
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-489
CISA KEVNo
Affected1 vendor(s)
PublishedApr 14, 2020

Related CVEs (CWE-489)

CVE-2025-46674
9.9
CVE-2023-34346
9.8
CVE-2023-0954
9.8
CVE-2022-29520
9.8
CVE-2023-32645
9.8
CVE-2026-49188
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-10939 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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