CVE-2021-20599

mediumPriorität · verfolgen · 30OT-Risiko · erhöhtEPSS 0.014 · 72. PerzentilEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.40% (72nd) EPSS
CVSS 5 · medium
Is it mine?
40 products
Prüfe deine Angriffsfläche
Who says so?
4 sources
cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · bewertet 2026-10-27

Cleartext Transmission of Sensitive InformationCleartext transmission of sensitive information vulnerability in MELSEC iQ-R series Safety CPU R08/16/32/120SFCPU firmware versions "26" and prior and MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU firmware versions "11" and prior allows a remote unauthenticated attacker to login to a target CPU module by obtaining credentials other than password.

01

Behebungen

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

Noch kein Hersteller-Fix; eine Mitigation ist verfügbar.

  • MitigationMELSEC iQ-R series SIL2 Process CPU R08PSFCPU Firmwarecisa_csaf_ot

    Customers using the affected products and versions may take measures through mitigations and workarounds. Mitsubishi Electric has released the fixed version as shown above, but updating the product to the fixed version is not available. Mitsubishi Electric recommends users take the following mitigation measures to minimize risk associated with this vulnerability:

  • MitigationMELSEC iQ-R series SIL2 Process CPU R120PSFCPU Firmwarecisa_csaf_ot

    Customers using the affected products and versions may take measures through mitigations and workarounds. Mitsubishi Electric has released the fixed version as shown above, but updating the product to the fixed version is not available. Mitsubishi Electric recommends users take the following mitigation measures to minimize risk associated with this vulnerability:

  • MitigationMELSEC iQ-R series SIL2 Process CPU R16PSFCPU Firmwarecisa_csaf_ot

    Customers using the affected products and versions may take measures through mitigations and workarounds. Mitsubishi Electric has released the fixed version as shown above, but updating the product to the fixed version is not available. Mitsubishi Electric recommends users take the following mitigation measures to minimize risk associated with this vulnerability:

  • MitigationMELSEC iQ-R series SIL2 Process CPU R32PSFCPU Firmwarecisa_csaf_ot

    Customers using the affected products and versions may take measures through mitigations and workarounds. Mitsubishi Electric has released the fixed version as shown above, but updating the product to the fixed version is not available. Mitsubishi Electric recommends users take the following mitigation measures to minimize risk associated with this vulnerability:

  • MitigationMELSEC iQ-R series Safety CPU R08SFCPU Firmwarecisa_csaf_ot

    Customers using the affected products and versions may take measures through mitigations and workarounds. Mitsubishi Electric has released the fixed version as shown above, but updating the product to the fixed version is not available. Mitsubishi Electric recommends users take the following mitigation measures to minimize risk associated with this vulnerability:

  • MitigationMELSEC iQ-R series Safety CPU R120SFCPU Firmwarecisa_csaf_ot

    Customers using the affected products and versions may take measures through mitigations and workarounds. Mitsubishi Electric has released the fixed version as shown above, but updating the product to the fixed version is not available. Mitsubishi Electric recommends users take the following mitigation measures to minimize risk associated with this vulnerability:

  • MitigationMELSEC iQ-R series Safety CPU R16SFCPU Firmwarecisa_csaf_ot

    Customers using the affected products and versions may take measures through mitigations and workarounds. Mitsubishi Electric has released the fixed version as shown above, but updating the product to the fixed version is not available. Mitsubishi Electric recommends users take the following mitigation measures to minimize risk associated with this vulnerability:

  • MitigationMELSEC iQ-R series Safety CPU R32SFCPU Firmwarecisa_csaf_ot

    Customers using the affected products and versions may take measures through mitigations and workarounds. Mitsubishi Electric has released the fixed version as shown above, but updating the product to the fixed version is not available. Mitsubishi Electric recommends users take the following mitigation measures to minimize risk associated with this vulnerability:

02

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 · 5–9.1

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 2.9
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 3.6
v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · CISA US
v3.17.3highAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Lsecondary · FSTEC (BDU) RU
v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · ENISA EU
v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jpAusnutzbarkeit 3.9 · Auswirkung 5.2
v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)
03

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS
04

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-319USCWE-319USCWE-319USCWE-639US
05

betroffene Produkte (40)

Betroffene Produkte und Versionsbereiche.

20 von 40 angezeigt
06

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

  • ICSA-21-287-03Mitsubishi Electric MELSEC iQ-R Series2021-08-06icsa · cisa_csaf_otUS

    Successful exploitation of this vulnerability could allow a remote attacker to be able to log in to the CPU module by obtaining credentials.

07

auch bekannt als (5)

Weitere Namen und Kennungen dieser Entität.

08

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvdenisa_euvdfstec_bducisa_csaf_otNVDCVE.orgMITRE
veröffentlicht 2021-10-14geändert 2026-06-17
09

Referenzen (13)

Externe Belege — Patches, Meldungen, Analysen.

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