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    CVE-2021-36764

    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.

    Published:Aug 4, 2021
    Last Modified:Nov 21, 2024
    EPS:Aug 4, 2021
    EPSS Score:0.00336
    CVSS Score:7.5

    Affected Products

    Vendor
    Codesys
    Product
    Gateway

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2022-30792 (CVSS 7.5) — In CmpChannelServer of CODESYS V3 in multiple versions an uncontrolled ressource consumption allows an unautho…
    CVE-2022-30791 (CVSS 7.5) — In CmpBlkDrvTcp of CODESYS V3 in multiple versions an uncontrolled ressource consumption allows an unauthorize…
    CVE-2022-31805 (CVSS 7.5) — In the CODESYS Development System multiple components in multiple versions transmit the passwords for the comm…
    CVE-2022-31804 (CVSS 7.5) — The CODESYS Gateway Server V2 does not verifiy that the size of a request is within expected limits. An unauth…
    CVE-2022-31803 (CVSS 5.3) — In CODESYS Gateway Server V2 an insufficient check for the activity of TCP client connections allows an unauth…
    CVE-2022-31802 (CVSS 9.8) — In CODESYS Gateway Server V2 for versions prior to V2.3.9.38 only a part of the the specified password is been…
    CVE-2022-22517 (CVSS 7.5) — An unauthenticated, remote attacker can disrupt existing communication channels between CODESYS products by gu…
    CVE-2022-22514 (CVSS 7.1) — An authenticated, remote attacker can gain access to a dereferenced pointer contained in a request. The access…
    CVE-2022-22513 (CVSS 6.5) — An authenticated remote attacker can cause a null pointer dereference in the CmpSettings component of the affe…
    CVE-2021-29242 (CVSS 7.3) — CODESYS Control Runtime system before 3.5.17.0 has improper input validation. Attackers can send crafted commu…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High