CVE-2020-28391
A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) ...
A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0), SCALANCE X-200RNA switch family (All versions < V3.2.7). Devices create a new unique key upon factory reset, except when used with C-PLUG. When used with C-PLUG the devices use the hardcoded private RSA-key shipped with the firmware-image. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
5.9
A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0), SCALANCE X-200RNA switch family (All versions < V3.2.7). Devices create a new unique key upon factory reset, except when used with C-PLUG. When used with C-PLUG the devices use the hardcoded private RSA-key shipped with the firmware-image. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.
- Record
CVE-2020-28391- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:P/I:N/A:N - Weakness
- CWE-321, CWE-798
- Updated
- 2026-11-02
CVE List No score
A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0), SCALANCE X-200RNA switch family (All versions < V3.2.7). Devices create a new unique key upon factory reset, except when used with C-PLUG. When used with C-PLUG the devices use the hardcoded private RSA-key shipped with the firmware-image. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.
- Record
CVE-2020-28391- Weakness
- CWE-321
- Updated
- 2026-11-02
EUVDEUVD-2020-20850 No score
A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0), SCALANCE X-200RNA switch family (All versions < V3.2.7). Devices create a new unique key upon factory reset, except when used with C-PLUG. When used with C-PLUG the devices use the hardcoded private RSA-key shipped with the firmware-image. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.
- Record
EUVD-2020-20850- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pffp-ch4h-4669
5.9
A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) ...
A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All Versions), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions). Devices create a new unique key upon factory reset, except when used with C-PLUG. When used with C-PLUG the devices use the hardcoded private RSA-key shipped with the firmware-image. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.
- Record
GHSA-pffp-ch4h-4669- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-321, CWE-798
- Updated
- 2026-11-02
Affected products
- siemens scalance x-200 switch family (incl. siplus net variants)
- siemens scalance x-200irt switch family (incl. siplus net variants)
- siemens scalance x-200rna switch family
- siemens scalance x200-4pirt firmware
- siemens scalance x201-3pirt firmware
- siemens scalance x202-2irt firmware
- siemens scalance x202-2pirt firmware
- siemens scalance x202-2pirt siplus net firmware
- siemens scalance x204irt firmware
- siemens scalance x307-3 firmware
- siemens scalance x307-3ld firmware
- siemens scalance x308-2 firmware
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- siemens scalance x308-2ld firmware
- siemens scalance x308-2lh\+ firmware
- siemens scalance x308-2lh firmware
- siemens scalance x308-2m firmware
- siemens scalance x308-2m ts firmware
- siemens scalance x310 firmware
- siemens scalance x310fe firmware
- siemens scalance x320-1fe firmware
- siemens scalance x320-3ldfe firmware
- siemens scalance xb205-3 firmware
- siemens scalance xb205-3ld firmware
- siemens scalance xb208 firmware
- siemens scalance xb213-3 firmware
- siemens scalance xb213-3ld firmware
- siemens scalance xb216 firmware
- siemens scalance xc206-2 firmware
- siemens scalance xc206-2g poe firmware
- siemens scalance xc206-2g poe eec firmware
- siemens scalance xc206-2sfp eec firmware
- siemens scalance xc206-2sfp firmware
- siemens scalance xc206-2sfp g \(e\/ip\) firmware
- siemens scalance xc206-2sfp g eec firmware
- siemens scalance xc206-2sfp g firmware
- siemens scalance xc208 firmware
- siemens scalance xc208eec firmware
- siemens scalance xc208g \(e\/ip\) firmware
- siemens scalance xc208g eec firmware
- siemens scalance xc208g firmware
- siemens scalance xc208g poe firmware
- siemens scalance xc216-4c firmware
- siemens scalance xc216-4c g \(e\/ip\) firmware
- siemens scalance xc216-4c g eec firmware
- siemens scalance xc216-4c g firmware
- siemens scalance xc216 firmware
- siemens scalance xc216eec firmware
- siemens scalance xc224-4c g \(e\/ip\) firmware
- siemens scalance xc224-4c g firmware
- siemens scalance xc224-4c g eec firmware
- siemens scalance xc224 firmware
- siemens scalance xf201-3p irt firmware
- siemens scalance xf202-2p irt firmware
- siemens scalance xf204-2 firmware
- siemens scalance xf204-2ba dna firmware
- siemens scalance xf204-2ba irt firmware
- siemens scalance xf204 dna firmware
- siemens scalance xf204 firmware
- siemens scalance xf204irt firmware
- siemens scalance xf206-1 firmware
- siemens scalance xf208 firmware
- siemens scalance xp208 \(eip\) firmware
- siemens scalance xp208 firmware
- siemens scalance xp208eec firmware
- siemens scalance xp208poe eec firmware
- siemens scalance xp216 \(eip\) firmware
- siemens scalance xp216 firmware
- siemens scalance xp216eec firmware
- siemens scalance xp216poe eec firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-28391 is a medium vulnerability (CVSS 5.9) in Siemens Scalance X-200 Switch Family (incl. Siplus Net Variants), published January 12, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.13%, the 66th percentile. No source names a fixed version.