High severity · published Aug 3, 2021
CVE-2021-36763
In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties
7.5
CVSS
1%
EPSS
No
On KEV
Description
In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Control · Codesys
before 4.2.0.0; before 4.2.0.0; before 4.2.0.0; through 4.2.0.0; before 4.2.0.0; before 4.2.0.0; +3 more · source: NVD
CR
Control Rte · Codesys
before 3.5.17.10; before 3.5.17.10 · source: NVD
CR
Control Runtime System Toolkit · Codesys
before 3.5.17.10 · source: NVD
CW
Control Win SL · Codesys
before 3.5.17.10 · source: NVD
ET
Embedded Target Visu Toolkit · Codesys
before 3.5.17.10 · source: NVD
HM
Hmi · Codesys
before 3.5.17.10 · source: NVD
RT
Remote Target Visu Toolkit · Codesys
before 3.5.17.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36763
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36763
Vendor Advisory
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16803&token=0b8edf9276dc39ee52f43026c415c5b38085d90a&download=
More from Control
9.8
CVE-2021-33485
CODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow