NVD

CVE-2020-6994 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

A buffer overflow vulnerability was found in some devices of Hirschmann Automation and Control HiOS and HiSecOS. The vulnerability is due to improper parsing of URL arguments. An attacker could exploit this vulnerability by specially crafting HTTP requests to overflow an internal buffer. The following devices using HiOS Version 07.0.02 and lower are affected: RSP, RSPE, RSPS, RSPL, MSP, EES, EES, EESX, GRS, OS, RED. The following devices using HiSecOS Version 03.2.00 and lower are affected: EAGLE20/30.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 9.8 CRITICAL

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 7.5 HIGH

Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P)

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://www.us-cert.gov/ics/advisories/icsa-20-091-01	CVE, ICS-CERT	Mitigation Third Party Advisory US Government Resource

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-120	Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')	NIST
CWE-12	ASP.NET Misconfiguration: Missing Custom Error Page	ICS-CERT

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Reanalysis by NIST 6/17/2021 1:22:56 PM

Action

Type

Old Value

New Value

Changed

CPE Configuration

AND
     OR
          *cpe:2.3:o:hirschmann:hios:*:*:*:*:*:*:*:* versions up to (including) 07.0.02
     OR
          cpe:2.3:h:hirschmann:embedded_ethernet_switch:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:embedded_ethernet_switch_extended:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:greyhound_swtich:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:mice_switch_power:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:octopus:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:prp_redbox:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:rail_switch_power:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:rail_switch_power_enhanced:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:rail_switch_power_lite:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:rail_switch_power_smart:-:*:*:*:*:*:*:*

AND
     OR
          *cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:* versions up to (including) 07.0.02
     OR
          cpe:2.3:h:belden:hirschmann_embedded_ethernet_switch:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_embedded_ethernet_switch_extended:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_greyhound_swtich:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_mice_switch_power:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_octopus:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_prp_redbox:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_rail_switch_power:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_rail_switch_power_enhanced:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_rail_switch_power_lite:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_rail_switch_power_smart:-:*:*:*:*:*:*:*

Changed

CPE Configuration

AND
     OR
          *cpe:2.3:o:hirschmann:hisecos:*:*:*:*:*:*:*:* versions up to (including) 03.2.00
     OR
          cpe:2.3:h:hirschmann:eagle20:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:eagle30:-:*:*:*:*:*:*:*

AND
     OR
          *cpe:2.3:o:belden:hirschmann_hisecos:*:*:*:*:*:*:*:* versions up to (including) 03.2.00
     OR
          cpe:2.3:h:belden:hirschmann_eagle20:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_eagle30:-:*:*:*:*:*:*:*

Initial Analysis by NIST 4/06/2020 10:12:47 AM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Added	CWE		NIST CWE-120
Added	CPE Configuration		AND OR cpe:2.3:o:hirschmann:hios::::::::* versions up to (including) 07.0.02 OR cpe:2.3:h:hirschmann:embedded_ethernet_switch:-:::::::* cpe:2.3:h:hirschmann:embedded_ethernet_switch_extended:-:::::::* cpe:2.3:h:hirschmann:greyhound_swtich:-:::::::* cpe:2.3:h:hirschmann:mice_switch_power:-:::::::* cpe:2.3:h:hirschmann:octopus:-:::::::* cpe:2.3:h:hirschmann:prp_redbox:-:::::::* cpe:2.3:h:hirschmann:rail_switch_power:-:::::::* cpe:2.3:h:hirschmann:rail_switch_power_enhanced:-:::::::* cpe:2.3:h:hirschmann:rail_switch_power_lite:-:::::::* cpe:2.3:h:hirschmann:rail_switch_power_smart:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:hirschmann:hisecos::::::::* versions up to (including) 03.2.00 OR cpe:2.3:h:hirschmann:eagle20:-:::::::* cpe:2.3:h:hirschmann:eagle30:-:::::::*
Changed	Reference Type	https://www.us-cert.gov/ics/advisories/icsa-20-091-01 No Types Assigned	https://www.us-cert.gov/ics/advisories/icsa-20-091-01 Mitigation, Third Party Advisory, US Government Resource

Quick Info

CVE Dictionary Entry:
CVE-2020-6994
NVD Published Date:
04/03/2020
NVD Last Modified:
06/16/2026
Source:
ICS-CERT

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2020-6994 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by ICS-CERT 6/16/2026 11:24:05 PM

CVE Modified by CVE 11/21/2024 12:36:27 AM

CVE Modified by ICS-CERT 5/14/2024 3:29:59 AM

Reanalysis by NIST 6/17/2021 1:22:56 PM

Initial Analysis by NIST 4/06/2020 10:12:47 AM

Quick Info