High severity · published Aug 3, 2021
CVE-2021-33486
All versions of the CODESYS V3 Runtime Toolkit for VxWorks from version V3.5.8.0 and before version V3.5.17.10 have Improper Handling of Exceptional Conditions
7.5
CVSS
1%
EPSS
No
On KEV
Description
All versions of the CODESYS V3 Runtime Toolkit for VxWorks from version V3.5.8.0 and before version V3.5.17.10 have Improper Handling of Exceptional Conditions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RT
Runtime Toolkit · Codesys
3.5.8.0 before 3.5.17.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33486
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-33486
Vendor Advisory
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14806&token=637e12e86301b83beac1653bd88da3aa5aa3f51b&download=
More from Runtime Toolkit
9.8
CVE-2022-31806
In CODESYS V2 PLCWinNT and Runtime Toolkit 32 in versions prior to V2.4.7.57 password protection is not enabled by default and there is no information or prompt to enable password…
8.8
CVE-2023-6357
A low-privileged remote attacker could exploit the vulnerability and inject additional system commands via file system libraries which could give the attacker full control of the…
8.8
CVE-2022-4224
In multiple products of CODESYS v3 in multiple versions a remote low privileged user could utilize this vulnerability to read and modify system files and OS resources or DoS the…
8.8
CVE-2022-32143
In multiple CODESYS products, file download and upload function allows access to internal files in the working directory e.g
8.8
CVE-2022-32138
In multiple CODESYS products, a remote attacker may craft a request which may cause an unexpected sign extension, resulting in a denial-of-service condition or memory overwrite