Critical severity · published May 25, 2021
CVE-2021-30193
CODESYS V2 Web-Server before 1.1.9.20 has an Out-of-bounds Write
9.8
CVSS
1.1%
EPSS
No
On KEV
Description
CODESYS V2 Web-Server before 1.1.9.20 has an Out-of-bounds Write.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 66% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
7F
750-8202 Firmware · Wago
before 03.06.19_\(18\) · source: NVD
7F
750-8203 Firmware · Wago
before 03.06.19_\(18\) · source: NVD
7F
750-8204 Firmware · Wago
before 03.06.19_\(18\) · source: NVD
7F
750-8206 Firmware · Wago
before 03.06.19_\(18\) · source: NVD
7F
750-8207 Firmware · Wago
before 03.06.19_\(18\) · source: NVD
7F
750-8208 Firmware · Wago
before 03.06.19_\(18\) · source: NVD
7F
750-8210 Firmware · Wago
before 03.06.19_\(18\) · source: NVD
7F
750-8211 Firmware · Wago
before 03.06.19_\(18\) · source: NVD
7F
750-8212 Firmware · Wago
before 03.06.19_\(18\) · source: NVD
7F
750-8213 Firmware · Wago
before 03.06.19_\(18\) · source: NVD
7F
750-8214 Firmware · Wago
before 03.06.19_\(18\) · source: NVD
7F
750-8216 Firmware · Wago
before 03.06.19_\(18\) · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30193
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-30193
Permissions Required
https://customers.codesys.com/index.php
Vendor Advisory
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14726&token=553da5d11234bbe1ceed59969d419a71bb8c8747&download=
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CODESYS V2 Web-Server before 1.1.9.20 has an Improperly Implemented Security Check
9.8
CVE-2021-30190
CODESYS V2 Web-Server before 1.1.9.20 has Improper Access Control
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CVE-2021-30189
CODESYS V2 Web-Server before 1.1.9.20 has a Stack-based Buffer Overflow
9.1
CVE-2021-30194
CODESYS V2 Web-Server before 1.1.9.20 has an Out-of-bounds Read
7.5
CVE-2021-30191
CODESYS V2 Web-Server before 1.1.9.20 has a a Buffer Copy without Checking the Size of the Input