High severity · published Aug 4, 2021
CVE-2021-36764
In CODESYS Gateway V3 before 3.5.17.10, there is a NULL Pointer Dereference
7.5
CVSS
1%
EPSS
No
On KEV
Description
In CODESYS Gateway V3 before 3.5.17.10, there is a NULL Pointer Dereference. Crafted communication requests may cause a Null pointer dereference in the affected CODESYS products and may result in a denial-of-service condition.
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 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GA
Gateway · Codesys
3.0 before 3.5.17.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36764
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36764
Broken Link
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16804&token=d8c89c887979b22fdfc9fd5c3aa3804bbb1ddbff&download=
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