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    CVE-2021-34581

    Missing Release of Resource after Effective Lifetime vulnerability in OpenSSL implementation of WAGO 750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889 in versions FW4 up to FW15 allows an unauthenticated attacker to cause DoS on the device.

    Published:Aug 31, 2021
    Last Modified:Nov 21, 2024
    EPS:Aug 31, 2021
    EPSS Score:0.01583
    CVSS Score:7.5

    Affected Products

    Vendor
    Wago
    Product
    750-831
    Vendor
    Wago
    Product
    750-831\/000-002
    Vendor
    Wago
    Product
    750-831\/000-002 Firmware
    Vendor
    Wago
    Product
    750-831 Firmware
    Vendor
    Wago
    Product
    750-880
    Vendor
    Wago
    Product
    750-880\/025-000
    Vendor
    Wago
    Product
    750-880\/025-000 Firmware
    Vendor
    Wago
    Product
    750-880\/025-001
    Vendor
    Wago
    Product
    750-880\/025-001 Firmware
    Vendor
    Wago
    Product
    750-880\/025-002
    Vendor
    Wago
    Product
    750-880\/025-002 Firmware
    Vendor
    Wago
    Product
    750-880\/040-000
    Vendor
    Wago
    Product
    750-880\/040-000 Firmware
    Vendor
    Wago
    Product
    750-880 Firmware
    Vendor
    Wago
    Product
    750-881
    Vendor
    Wago
    Product
    750-881 Firmware
    Vendor
    Wago
    Product
    750-889
    Vendor
    Wago
    Product
    750-889 Firmware

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-469 HTTP DoS

    Related CVEs

    CVE-2023-1620 (CVSS 4.9) — Multiple WAGO devices in multiple versions may allow an authenticated remote attacker with high privileges to …
    CVE-2023-1619 (CVSS 4.9) — Multiple WAGO devices in multiple versions may allow an authenticated remote attacker with high privileges to …
    CVE-2021-34596 (CVSS 6.5) — A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit ful…
    CVE-2021-34595 (CVSS 8.1) — A crafted request with invalid offsets may cause an out-of-bounds read or write access in CODESYS V2 Runtime T…
    CVE-2021-34586 (CVSS 7.5) — In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests may cause a Null pointer dereferen…
    CVE-2021-34585 (CVSS 7.5) — In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests can trigger a parser error. Since …
    CVE-2021-34584 (CVSS 9.1) — Crafted web server requests can be utilised to read partial stack or heap memory or may trigger a denial-of- s…
    CVE-2021-34583 (CVSS 7.5) — Crafted web server requests may cause a heap-based buffer overflow and could therefore trigger a denial-of- se…
    CVE-2021-30195 (CVSS 7.5) — CODESYS V2 runtime system before 2.4.7.55 has Improper Input Validation.…
    CVE-2021-30188 (CVSS 9.8) — CODESYS V2 runtime system SP before 2.4.7.55 has a Stack-based Buffer Overflow.…

    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