CVE-2021-35533

highPriorität · verfolgen · 30EPSS 0.009 · 61. PerzentilEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.95% (61st) EPSS

CVSS 7.1 · high

Is it mine?

12 products

Prüfe deine Angriffsfläche

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · bewertet 2026-10-27

Improper Input Validation vulnerability in the APDU parser in the Bidirectional Communication Interface (BCI) IEC 60870-5-104 function of Hitachi Energy RTU500 series allows an attacker to cause the receiving RTU500 CMU of which the BCI is enabled to reboot when receiving a specially crafted message. By default, BCI IEC 60870-5-104 function is disabled (not configured). This issue affects: Hitachi Energy RTU500 series CMU Firmware version 12.0.* (all versions); CMU Firmware version 12.2.* (all versions); CMU Firmware version 12.4.* (all versions).

Behebungen

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

Noch kein Hersteller-Fix; eine Mitigation ist verfügbar.

MitigationRTU500 series CMU Firmware Version 12.0cisa_csaf_ot
Disable BCI IEC 60870-5-104 function by configuration if it is not used. Note: By default, the BCI IEC 60870-5-104 is disabled.
MitigationRTU500 series CMU Firmware Version 12.2cisa_csaf_ot
Disable BCI IEC 60870-5-104 function by configuration if it is not used. Note: By default, the BCI IEC 60870-5-104 is disabled.
MitigationRTU500 series CMU Firmware Version 12.4cisa_csaf_ot
Disable BCI IEC 60870-5-104 function by configuration if it is not used. Note: By default, the BCI IEC 60870-5-104 is disabled.

cvss

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

7.5

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.9–7.5

v2.07.1highAV:N/AC:M/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USAusnutzbarkeit 8.6 · Auswirkung 6.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 3.6

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · cybersecurity@hitachienergy.comAusnutzbarkeit 3.9 · Auswirkung 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-20USprimärCWE-20US

betroffene Produkte (12)

Betroffene Produkte und Versionsbereiche.

RTU500 series CMU Firmware Version 12.0: All versionsalle Versionencisa_csaf_otUS
RTU500 series CMU Firmware Version 12.2: All versionsalle Versionencisa_csaf_otUS
RTU500 series CMU Firmware Version 12.4: All versionsalle Versionencisa_csaf_otUS
Hitachi Energy RTU500 series CMU Firmware Version 12.0alle Versionencisa_csaf_otUS
Hitachi Energy RTU500 series CMU Firmware Version 12.2alle Versionencisa_csaf_otUS
Hitachi Energy RTU500 series CMU Firmware Version 12.4alle Versionencisa_csaf_otUS
Hitachi Energy RTU500 series≤ CMU Firmware version 12.2 ≤12.2.*enisa_euvdEU
Hitachi Energy RTU500 series≤ CMU Firmware version 12.0 ≤12.0.*enisa_euvdEU
Hitachi Energy RTU500 series≤ CMU Firmware version 12.4 ≤12.4.*enisa_euvdEU
hitachienergy rtu500 firmware= 12.0nvdUScpe:2.3:o:hitachienergy:rtu500_firmware:*:*:*:*:*:*:*:*
hitachienergy rtu500 firmware= 12.2nvdUScpe:2.3:o:hitachienergy:rtu500_firmware:*:*:*:*:*:*:*:*
hitachienergy rtu500 firmware= 12.4nvdUScpe:2.3:o:hitachienergy:rtu500_firmware:*:*:*:*:*:*:*:*

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

ICSA-21-336-04Hitachi Energy RTU500 series BCI2021-12-02icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could allow a remote attacker to reboot the device.

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

veröffentlicht 2021-11-26geändert 2026-06-17

verwandt (25,193)

Verwandte Einträge.

ID	Schweregrad	EPSS	ausnutzbar	veröffentlicht
CVE-2026-88771US	critical9.8OT kritisch	82.2% (100th)	KEV	2026-09-27
Improper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS,…
CVE-2026-93952US	—OT kritisch	1.38% (72nd)	KEV	2026-09-22
VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality and impact the VCO host. Successf…
CVE-2026-12569US	critical9.8OT kritisch	46.0% (99th)	KEV	2026-06-18
A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill PDMlink and PTC FlexPLM. The vulnerability may be exploited through the deserialization of u…
CVE-2026-34910US	—OT kritisch	90.0% (100th)	KEV	2026-05-22
A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection.
CVE-2026-6973US	—OT kritisch	34.5% (98th)	KEV	2026-05-07
An Improper Input Validation in Ivanti EPMM before versions 12.6.1.1, 12.7.0.1, and 12.8.0.1 allows a remotely authenticated user with administrative access to achieve remote code…

+25188 weitere

Referenzen (7)

Externe Belege — Patches, Meldungen, Analysen.

scry

Angreifer nutzen Schwachstellen wie diese gegen im Internet exponierte Dienste aus. Sehen Sie mit einem kostenlosen Passiv-Scan, was exponiert ist.

Kostenloser Scan