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CVE-2019-13940

HIGH
7.5
CVSS Score
Published: February 11, 2020 at 03:36 PM UTC
Updated: June 17, 2026 at 02:17 AM UTC
67 products affected across 1 vendorSIMATIC WinAC RTX (F) 2010SIMATIC S7-300 CPU 315-2 Dp FirmwareSIMATIC S7-300 CPU 317-2 Dp Firmware

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Severity
HIGH7.5
Exploit prediction
EPSS 2%

Description

A vulnerability has been identified in SIMATIC ET 200pro IM154-8 PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200pro IM154-8F PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200pro IM154-8FX PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200S IM151-8 PN/DP CPU (All versions < V3.X.17), SIMATIC ET 200S IM151-8F PN/DP CPU (All versions < V3.X.17), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.1), SIMATIC S7-300 CPU 314C-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315F-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 315T-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317F-2 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317T-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 317TF-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 319-3 PN/DP (All versions < V3.X.17), SIMATIC S7-300 CPU 319F-3 PN/DP (All versions < V3.X.17), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), SIMATIC WinAC RTX 2010 (All versions), SIMATIC WinAC RTX F 2010 (All versions), SIPLUS ET 200S IM151-8 PN/DP CPU (All versions < V3.X.17), SIPLUS ET 200S IM151-8F PN/DP CPU (All versions < V3.X.17), SIPLUS S7-300 CPU 314C-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 315-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 315F-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 317-2 PN/DP (All versions < V3.X.17), SIPLUS S7-300 CPU 317F-2 PN/DP (All versions < V3.X.17). Affected devices contain a vulnerability that could cause a denial of service condition of the web server by sending specially crafted HTTP requests to ports 80/tcp and 443/tcp. Beyond the web service, no other functions or interfaces are affected by the denial of service condition.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

S7-1200 CPU 1211C Firmware· Siemens
95%
v < 4.1
Affected range stops below 4.1, so it looks safe — our inference, not a vendor statement
siemens-s7-1200-cpu-1211c (same device)
S7-1200 CPU 1212C Firmware· Siemens
95%
v < 4.1
Affected range stops below 4.1, so it looks safe — our inference, not a vendor statement
siemens-s7-1200-cpu-1212c (same device)
S7-1200 CPU 1212FC Firmware· Siemens
95%
v < 4.1
Affected range stops below 4.1, so it looks safe — our inference, not a vendor statement
siemens-s7-1200-cpu-1212fc (same device)
S7-1200 CPU 1214C Firmware· Siemens
95%
v < 4.1
Affected range stops below 4.1, so it looks safe — our inference, not a vendor statement
siemens-s7-1200-cpu-1214c (same device)
S7-1200 CPU 1214FC Firmware· Siemens
95%
v < 4.1
Affected range stops below 4.1, so it looks safe — our inference, not a vendor statement
siemens-s7-1200-cpu-1214fc (same device)
S7-1200 CPU 1215C Firmware· Siemens
95%
v < 4.1
Affected range stops below 4.1, so it looks safe — our inference, not a vendor statement
siemens-s7-1200-cpu-1215c (same device)
S7-1200 CPU 1215FC Firmware· Siemens
95%
v < 4.1
Affected range stops below 4.1, so it looks safe — our inference, not a vendor statement
siemens-s7-1200-cpu-1215fc (same device)
S7-1200 CPU 1217C Firmware· Siemens
95%
v < 4.1
Affected range stops below 4.1, so it looks safe — our inference, not a vendor statement
siemens-s7-1200-cpu-1217c (same device)
SIMATIC S7-300 CPU 315-2 Dp Firmware· Siemens
95%
All versions
siemens-simatic-s7-300-cpu-315-2dp (same device)
SIMATIC S7-300 CPU 317-2 Dp Firmware· Siemens
95%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-431678.pdf

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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