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CVE-2020-28395

MEDIUM
5.9
CVSS Score
Published: January 12, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 03:10 AM UTC
18 products affected across 1 vendorScalance Xr324-4m POE FirmwareScalance Xr324-12m Ts FirmwareScalance Xr324-4m Eec Firmware

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Severity
MEDIUM5.9
Exploit prediction
EPSS 1%

Description

A vulnerability has been identified in SCALANCE X-200RNA switch family (All versions < V3.2.7), SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants) (All versions < V4.1.0). Devices do not create a new unique private key after factory reset. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.

Affected

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

Scalance Xr324-12m Firmware· Siemens
95%
v < 4.1.0
Affected range stops below 4.1.0, so it looks safe — our inference, not a vendor statement
siemens-scalance-xr324-12m (same device)
Scalance Xr324-12m Ts Firmware· Siemens
95%
v < 4.1.0
Affected range stops below 4.1.0, so it looks safe — our inference, not a vendor statement
siemens-scalance-xr324-12m-ts (same device)
Scalance Xr324-4m Eec Firmware· Siemens
95%
v < 4.1.0
Affected range stops below 4.1.0, so it looks safe — our inference, not a vendor statement
siemens-scalance-xr324-4m-eec (same device)
Scalance Xr324-4m POE Firmware· Siemens
95%
v < 4.1.0
Affected range stops below 4.1.0, so it looks safe — our inference, not a vendor statement
siemens-scalance-xr324-4m-poe (same device)
Scalance Xr324-4m POE Ts Firmware· Siemens
95%
v < 4.1.0
Affected range stops below 4.1.0, so it looks safe — our inference, not a vendor statement
siemens-scalance-xr324-4m-poe-ts (same device)
Scalance XR324WG Firmware· Siemens
95%
v < 4.1.0
Affected range stops below 4.1.0, so it looks safe — our inference, not a vendor statement
siemens-scalance-xr324wg (same device)
Scalance Xr326-2c POE Wg Firmware· Siemens
95%
v < 4.1.0
Affected range stops below 4.1.0, so it looks safe — our inference, not a vendor statement
siemens-scalance-xr326-2c-poe-wg (same device)
Scalance Xr328-4c Wg Firmware· Siemens
95%
v < 4.1.0
Affected range stops below 4.1.0, so it looks safe — our inference, not a vendor statement
siemens-scalance-xr328-4c-wg (same device)
Scalance X 200RNA· Siemens
60%
All versions < V3.2.7
Scalance X 300· Siemens
60%
All versions < V4.1.0

Remediation

No guide yet

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

Patch and advisory references

References (2)

Vendor Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf
Third Party AdvisoryUS Government ResourceVendor Advisory
Source: [email protected]
https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02

CVSS

5.9MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-321CWE-798

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