CVE-2020-15796

HIGH
7.5
CVSS Score
Published: December 14, 2020 at 09:05 PM UTC
Updated: June 17, 2026 at 02:57 AM UTC
4 products affected across 1 vendorSIMATIC S7-1500 Software Controller FirmwareSIMATIC Et 200SP Open Controller FirmwareSIMATIC S7-1500 Software Controller

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Severity
HIGH7.5
Exploit prediction
EPSS 2%

Description

A vulnerability has been identified in SIMATIC ET 200SP Open Controller (incl. SIPLUS variants) (V20.8), SIMATIC S7-1500 Software Controller (V20.8). The web server of the affected products contains a vulnerability that could allow a remote attacker to trigger a denial-of-service condition by sending a specially crafted HTTP request.

Affected

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

v ≤ 20.8
siemens-simatic-et-200sp-open-controller (same device)
v ≤ 20.8
siemens-simatic-s7-1500-software-controller (same device)

Remediation

No guide yet

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

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-248

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