CVE-2021-33720

Published on: 09/14/2021 12:00:00 AM UTC

Last Modified on: 12/14/2021 08:58:00 PM UTC

CVE-2021-33720

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

Certain versions of Siprotec 5 With Cpu Variant Cp050 from Siemens contain the following vulnerability:

A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP300 (All versions < V8.80). Specially crafted packets sent to port 4443/tcp could cause a Denial-of-Service condition.

CVE-2021-33720 has been assigned by [email protected] to track the vulnerability - currently rated as HIGH severity.
Affected Vendor/Software: Siemens - SIPROTEC 5 relays with CPU variants CP050 version All versions < V8.80
Affected Vendor/Software: Siemens - SIPROTEC 5 relays with CPU variants CP100 version All versions < V8.80
Affected Vendor/Software: Siemens - SIPROTEC 5 relays with CPU variants CP300 version All versions < V8.80

CVSS3 Score: 7.5 - HIGH

Attack Vector ^ⓘ	Attack Complexity	Privileges Required	User Interaction
NETWORK	LOW	NONE	NONE
Scope	Confidentiality Impact	Integrity Impact	Availability Impact
UNCHANGED	NONE	NONE	HIGH

CVSS2 Score: 5 - MEDIUM

Access Vector^ⓘ	Access Complexity	Authentication
NETWORK	LOW	NONE
Confidentiality Impact	Integrity Impact	Availability Impact
NONE	NONE	PARTIAL

CVE References

Description	Tags ^ⓘ	Link
	cert-portal.siemens.com application/pdf	MISC cert-portal.siemens.com/productcert/pdf/ssa-847986.pdf

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Related QID Numbers

590713 Siemens SIPROTEC 5 relays (Update A) Multiple Vulnerabilities (ICSA-21-257-10)

Known Affected Configurations (CPE V2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Operating System	Siemens	Siprotec 5 With Cpu Variant Cp050	All	All	All	All
Operating System	Siemens	Siprotec 5 With Cpu Variant Cp100	All	All	All	All
Operating System	Siemens	Siprotec 5 With Cpu Variant Cp200	All	All	All	All
Operating System	Siemens	Siprotec 5 With Cpu Variant Cp300	All	All	All	All

cpe:2.3:o:siemens:siprotec_5_with_cpu_variant_cp050:*:*:*:*:*:*:*:*:
cpe:2.3:o:siemens:siprotec_5_with_cpu_variant_cp100:*:*:*:*:*:*:*:*:
cpe:2.3:o:siemens:siprotec_5_with_cpu_variant_cp200:*:*:*:*:*:*:*:*:
cpe:2.3:o:siemens:siprotec_5_with_cpu_variant_cp300:*:*:*:*:*:*:*:*:

No vendor comments have been submitted for this CVE

Social Mentions

Source	Title	Posted (UTC)
@CVEreport	CVE-2021-33720 : A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 All versions < V… twitter.com/i/web/status/1…	2021-09-14 10:57:17