Vulnerability Details : CVE-2021-21000
On WAGO PFC200 devices in different firmware versions with special crafted packets an attacker with network access to the device could cause a denial of service for the login service of the runtime.
Vulnerability category: Denial of service
Products affected by CVE-2021-21000
- cpe:2.3:o:wago:750-880_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-881_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-852_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-882_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-885_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-831_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-889_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-829_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-823_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-832_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-862_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-891_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-890_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-893_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-8202_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-8203_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-8204_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-8206_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-8207_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-8208_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-8210_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-8211_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-8212_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-8213_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-8214_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-8216_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:wago:750-8217_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-21000
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 42 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-21000
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
3.9
|
1.4
|
CERT VDE | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-21000
-
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Assigned by:
- info@cert.vde.com (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2021-21000
-
https://cert.vde.com/en-us/advisories/vde-2021-014
WAGO: Multiple Vulnerabilities in CODESYS Runtime 2.3 — English (USA)Third Party Advisory
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