CVE-2020-28395

mediumPriorität · verfolgen · 24OT-Risiko · erhöhtEPSS 0.012 · 68. PerzentilDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.19% (68th) EPSS

CVSS 4.3 · medium

Is it mine?

19 products

Prüfe deine Angriffsfläche

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · bewertet 2026-10-27

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.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

BehobenSCALANCE X-200RNA switch familysiemens_psirt
Update to V3.2.7 or later version
https://support.industry.siemens.com/cs/ww/en/view/109814809/
BehobenSCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants)siemens_psirt
Update to V4.1.0 or later version (for supported devices)
https://support.industry.siemens.com/cs/ww/en/view/109773547/
BehobenSCALANCE X-200RNA switch familycisa_csaf_ot
Update to V3.2.7 or later version
https://support.industry.siemens.com/cs/ww/en/view/109814809/
BehobenSCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants)cisa_csaf_ot
Update to V4.1.0 or later version (for supported devices)
https://support.industry.siemens.com/cs/ww/en/view/109773547/
MitigationSCALANCE X-200RNA switch familysiemens_psirt
Update the default hardcoded X.509 certificates from the firmware image (fingerprints SHA-1: F2:C8:3B:8F:86:27:74:AA:60:EC:D4:A0:CF:0D:BE:A6:D1:FE:22:12 and SHA-256: 25:60:DB:B3: F9:07:9D:69:0E:DD:A9:EB:4E:1C:D5:8E:AF:79:16:C3:C8:13:A6:F6:59:AD:05:E4:6F:77:F7:72 - fingerprints for X-200RNA switch devices SHA-1: 04:64:EF:98:A4:42:D2:BB:57:4A:47:12:20:EC:E6:85:15:4F:03:61 and SHA-256: 9C:15:FA:56:ED:FF:CA:8D:17:16:E9:2C:57:CB:90:3C:4E:81:5B:3D:60:E9:CF:26:07:B3:73:F6:C7:02:75:88)
MitigationSCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants)siemens_psirt
Update the default hardcoded X.509 certificates from the firmware image (fingerprints SHA-1: F2:C8:3B:8F:86:27:74:AA:60:EC:D4:A0:CF:0D:BE:A6:D1:FE:22:12 and SHA-256: 25:60:DB:B3: F9:07:9D:69:0E:DD:A9:EB:4E:1C:D5:8E:AF:79:16:C3:C8:13:A6:F6:59:AD:05:E4:6F:77:F7:72 - fingerprints for X-200RNA switch devices SHA-1: 04:64:EF:98:A4:42:D2:BB:57:4A:47:12:20:EC:E6:85:15:4F:03:61 and SHA-256: 9C:15:FA:56:ED:FF:CA:8D:17:16:E9:2C:57:CB:90:3C:4E:81:5B:3D:60:E9:CF:26:07:B3:73:F6:C7:02:75:88)
MitigationSCALANCE X-200RNA switch familycisa_csaf_ot
Update the default hardcoded X.509 certificates from the firmware image (fingerprints SHA-1: F2:C8:3B:8F:86:27:74:AA:60:EC:D4:A0:CF:0D:BE:A6:D1:FE:22:12 and SHA-256: 25:60:DB:B3: F9:07:9D:69:0E:DD:A9:EB:4E:1C:D5:8E:AF:79:16:C3:C8:13:A6:F6:59:AD:05:E4:6F:77:F7:72 - fingerprints for X-200RNA switch devices SHA-1: 04:64:EF:98:A4:42:D2:BB:57:4A:47:12:20:EC:E6:85:15:4F:03:61 and SHA-256: 9C:15:FA:56:ED:FF:CA:8D:17:16:E9:2C:57:CB:90:3C:4E:81:5B:3D:60:E9:CF:26:07:B3:73:F6:C7:02:75:88)
MitigationSCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants)cisa_csaf_ot
Update the default hardcoded X.509 certificates from the firmware image (fingerprints SHA-1: F2:C8:3B:8F:86:27:74:AA:60:EC:D4:A0:CF:0D:BE:A6:D1:FE:22:12 and SHA-256: 25:60:DB:B3: F9:07:9D:69:0E:DD:A9:EB:4E:1C:D5:8E:AF:79:16:C3:C8:13:A6:F6:59:AD:05:E4:6F:77:F7:72 - fingerprints for X-200RNA switch devices SHA-1: 04:64:EF:98:A4:42:D2:BB:57:4A:47:12:20:EC:E6:85:15:4F:03:61 and SHA-256: 9C:15:FA:56:ED:FF:CA:8D:17:16:E9:2C:57:CB:90:3C:4E:81:5B:3D:60:E9:CF:26:07:B3:73:F6:C7:02:75:88)

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

9.1

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–critical · 4.3–9.1

v2.04.3mediumAV:N/AC:M/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USAusnutzbarkeit 8.6 · Auswirkung 2.9

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USAusnutzbarkeit 2.2 · Auswirkung 3.6

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:P/RL:U/RC:Csecondary · CISA US

v3.15.9mediumAV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:P/RL:U/RC:Csecondary · Siemens ProductCERT DE

v3.15.4mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-321USCWE-321USCWE-321USCWE-321USCWE-798US

betroffene Produkte (19)

Betroffene Produkte und Versionsbereiche.

SCALANCE X-200RNA switch familyalle Versionencisa_csaf_otUS
SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants)alle Versionencisa_csaf_otUS
Siemens SCALANCE X-200RNA switch family< V3.2.7cisa_csaf_otUS
Siemens SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants)< V4.1.0cisa_csaf_otUS
Siemens SCALANCE X-200RNA switch familyAll versions → V3.2.7enisa_euvdEU
Siemens SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants)All versions → V4.1.0enisa_euvdEU
Siemens AG SCALANCE X-200alle Versionenfstec_bduRU
Siemens AG SCALANCE X-200 IRT≤ 5.5.0fstec_bduRU
Siemens AG SCALANCE X-300≤ 4.1.0fstec_bduRU
siemens scalance xr324-12m firmware< 4.1.0nvdUScpe:2.3:o:siemens:scalance_xr324-12m_firmware:*:*:*:*:*:*:*:*
siemens scalance xr324-12m ts firmware< 4.1.0nvdUScpe:2.3:o:siemens:scalance_xr324-12m_ts_firmware:*:*:*:*:*:*:*:*
siemens scalance xr324-4m eec firmware< 4.1.0nvdUScpe:2.3:o:siemens:scalance_xr324-4m_eec_firmware:*:*:*:*:*:*:*:*
siemens scalance xr324-4m poe firmware< 4.1.0nvdUScpe:2.3:o:siemens:scalance_xr324-4m_poe_firmware:*:*:*:*:*:*:*:*
siemens scalance xr324-4m poe ts firmware< 4.1.0nvdUScpe:2.3:o:siemens:scalance_xr324-4m_poe_ts_firmware:*:*:*:*:*:*:*:*
siemens scalance xr324wg firmware< 4.1.0nvdUScpe:2.3:o:siemens:scalance_xr324wg_firmware:*:*:*:*:*:*:*:*
siemens scalance xr326-2c poe wg firmware< 4.1.0nvdUScpe:2.3:o:siemens:scalance_xr326-2c_poe_wg_firmware:*:*:*:*:*:*:*:*
siemens scalance xr328-4c wg firmware< 4.1.0nvdUScpe:2.3:o:siemens:scalance_xr328-4c_wg_firmware:*:*:*:*:*:*:*:*
Siemens SCALANCE X-200RNA switch family< V3.2.7siemens_psirtDE
Siemens SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants)< V4.1.0siemens_psirtDE

Advisories (2)

Hersteller- und Ökosystem-Meldungen dazu.

SSA-274900SSA-274900: Use of Hardcoded Key in SCALANCE X Devices Under Certain Conditions2021-01-12csaf · siemens_psirtDE
SCALANCE X devices might not generate a unique random key after factory reset, and use a private key shipped with the firmware. Siemens has released updates for the affected products and recommends to update to the latest versions.
ICSA-21-012-02Siemens SCALANCE X Switches (Update B)2021-01-12icsa · cisa_csaf_otUS
SCALANCE X devices might not generate a unique random key after factory reset, and use a private key shipped with the firmware. Siemens has released updates for the affected products and recommends to update to the latest versions.

auch bekannt als (4)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd siemens_psirt NVD CVE.org MITRE

veröffentlicht 2021-01-12geändert 2026-06-17

Referenzen (9)

Externe Belege — Patches, Meldungen, Analysen.

scry

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