CVE-2021-20597

mediumPriorität · verfolgen · 37EPSS 0.022 · 83. PerzentilEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.22% (83rd) EPSS

CVSS 6.4 · medium

Is it mine?

34 products

Prüfe deine Angriffsfläche

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · bewertet 2026-10-27

Insufficiently Protected Credentials vulnerability in Mitsubishi Electric MELSEC iQ-R series Safety CPU modules R08/16/32/120SFCPU firmware versions "26" and prior and Mitsubishi Electric MELSEC iQ-R series SIL2 Process CPU modules R08/16/32/120PSFCPU firmware versions "11" and prior allows a remote unauthenticated attacker to login to the target unauthorizedly by sniffing network traffic and obtaining credentials when registering user information in the target or changing a password.

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
MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU:Firmware versions "12" or later
MitigationMELSEC iQ-R series SIL2 Process CPU R120PSFCPU Firmwarecisa_csaf_ot
MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU:Firmware versions "12" or later
MitigationMELSEC iQ-R series SIL2 Process CPU R16PSFCPU Firmwarecisa_csaf_ot
MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU:Firmware versions "12" or later
MitigationMELSEC iQ-R series SIL2 Process CPU R32PSFCPU Firmwarecisa_csaf_ot
MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU:Firmware versions "12" or later
MitigationMELSEC iQ-R series Safety CPU R08SFCPU Firmwarecisa_csaf_ot
MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU:Firmware versions "12" or later
MitigationMELSEC iQ-R series Safety CPU R120SFCPU Firmwarecisa_csaf_ot
MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU:Firmware versions "12" or later
MitigationMELSEC iQ-R series Safety CPU R16SFCPU Firmwarecisa_csaf_ot
MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU:Firmware versions "12" or later
MitigationMELSEC iQ-R series Safety CPU R32SFCPU Firmwarecisa_csaf_ot
MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU:Firmware versions "12" or later

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 · 6.4–9.1

v2.06.4mediumAV:N/AC:L/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 4.9

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 5.2

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · CISA US

v3.19.1criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.18.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-522USprimärCWE-522USCWE-522US

betroffene Produkte (34)

Betroffene Produkte und Versionsbereiche.

Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R08PSFCPU Firmware: <=11alle Versionencisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R120PSFCPU Firmware: <=11alle Versionencisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R16PSFCPU Firmware: <=11alle Versionencisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R32PSFCPU Firmware: <=11alle Versionencisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R08SFCPU Firmware: <=26alle Versionencisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R120SFCPU Firmware: <=26alle Versionencisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R16SFCPU Firmware: <=26alle Versionencisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R32SFCPU Firmware: <=26alle Versionencisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R08PSFCPU Firmware≤ 11cisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R120PSFCPU Firmware≤ 11cisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R16PSFCPU Firmware≤ 11cisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R32PSFCPU Firmware≤ 11cisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R08SFCPU Firmware≤ 26cisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R120SFCPU Firmware≤ 26cisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R16SFCPU Firmware≤ 26cisa_csaf_otUS
Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R32SFCPU Firmware≤ 26cisa_csaf_otUS
n/a Mitsubishi Electric MELSEC iQ-R series Safety CPU modules R08/16/32/120SFCPU; Mitsubishi Electric MELSEC iQ-R series SIL2 Process CPU modules R08/16/32/120PSFCPU≤ Mitsubishi Electric MELSEC iQ-R series SIL2 Process CPU modules R08/16/32/120PSFCPU firmware versions "11" and priorenisa_euvdEU
n/a Mitsubishi Electric MELSEC iQ-R series Safety CPU modules R08/16/32/120SFCPU; Mitsubishi Electric MELSEC iQ-R series SIL2 Process CPU modules R08/16/32/120PSFCPU≤ Mitsubishi Electric MELSEC iQ-R series Safety CPU modules R08/16/32/120SFCPU firmware versions "26" and priorenisa_euvdEU
Mitsubishi Electric Corporation MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU≤ 11fstec_bduRU
Mitsubishi Electric Corporation MELSEC iQ-R Series SIL2 Process CPU R120PSFCPU≤ 11fstec_bduRU

20 von 34 angezeigt

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

ICSA-21-250-01Mitsubishi Electric MELSEC iQ-R Series2021-09-07icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow a remote attacker unauthorized access to legitimate usernames, CPU module access, or the ability to deny access to legitimate users.

auch bekannt als (5)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot NVD CVE.org MITRE

veröffentlicht 2021-08-06geändert 2026-06-17

verwandt (1,722)

Verwandte Einträge.

ID	Schweregrad	EPSS	ausnutzbar	veröffentlicht
CVE-2021-40655US	high7.5OT kritisch	86.7% (100th)	KEV	2021-09-24
An informtion disclosure issue exists in D-LINK-DIR-605 B2 Firmware Version : 2.01MT. An attacker can obtain a user name and password by forging a post request to the / getcfg.php…
CVE-2021-30116US	critical9.8OT kritisch	85.7% (100th)	KEV	2021-07-09
Kaseya VSA before 9.5.7 allows credential disclosure, as exploited in the wild in July 2021. By default Kaseya VSA on premise offers a download page where the clients for the insta…
CVE-2021-22681US	critical9.8OT kritisch	63.6% (99th)	KEV	2021-03-03
Rockwell Automation Studio 5000 Logix Designer Versions 21 and later, and RSLogix 5000 Versions 16 through 20 use a key to verify Logix controllers are communicating with Rockwell…
CVE-2020-29583US	critical9.8OT kritisch	90.2% (100th)	KEV	2020-12-22
Firmware version 4.60 of Zyxel USG devices contains an undocumented account (zyfwp) with an unchangeable password. The password for this account can be found in cleartext in the fi…
CVE-2017-9248US	critical9.8OT kritisch	75.1% (100th)	KEV	2017-07-03
Telerik.Web.UI.dll in Progress Telerik UI for ASP.NET AJAX before R2 2017 SP1 and Sitefinity before 10.0.6412.0 does not properly protect Telerik.Web.UI.DialogParametersEncryptionK…

+1717 weitere

Referenzen (12)

Externe Belege — Patches, Meldungen, Analysen.

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