CVE-2020-7052

Exp

CODESYS Control V3, Gateway V3, and HMI V3 before 3.5.15.30 allow uncontrolled memory allocation which can result in a remote denial of service condition.

Published: 2020-01-24 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2020-7052 is rated High Exploit Risk (64.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.59%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2020-7052

EDB-ID Source Kind Published Link
nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-7052

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-18 0.76% 0.59% -0.16%
2 2025-07-19 0.99% 0.76% -0.24%
3 2025-03-30 0.99%

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-7052

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
2.8 3.6 [email protected]
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
8.0 2.9 [email protected]

Weakness enumeration for CVE-2020-7052

Affected software / configurations for CVE-2020-7052

Vendor Product Version Raw CPE
codesys control_for_beaglebone < 3.5.15.30 cpe:2.3:a:codesys:control_for_beaglebone:*:*:*:*:*:*:*:*
codesys control_for_empc-a\/imx6 < 3.5.15.30 cpe:2.3:a:codesys:control_for_empc-a\/imx6:*:*:*:*:*:*:*:*
codesys control_for_iot2000 < 3.5.15.30 cpe:2.3:a:codesys:control_for_iot2000:*:*:*:*:*:*:*:*
codesys control_for_linux < 3.5.15.30 cpe:2.3:a:codesys:control_for_linux:*:*:*:*:*:*:*:*
codesys control_for_pfc100 < 3.5.15.30 cpe:2.3:a:codesys:control_for_pfc100:*:*:*:*:*:*:*:*
codesys control_for_pfc200 < 3.5.15.30 cpe:2.3:a:codesys:control_for_pfc200:*:*:*:*:*:*:*:*
codesys control_for_plcnext < 3.5.15.30 cpe:2.3:a:codesys:control_for_plcnext:*:*:*:*:*:*:*:*
codesys control_for_raspberry_pi < 3.5.15.30 cpe:2.3:a:codesys:control_for_raspberry_pi:*:*:*:*:*:*:*:*
codesys control_rte >= 3.5.8.60, < 3.5.15.30 cpe:2.3:a:codesys:control_rte:*:*:*:*:*:*:*:*
codesys control_rte >= 3.5.8.60, < 3.5.15.30 cpe:2.3:a:codesys:control_rte:*:*:*:*:*:beckhoff_cx:*:*
codesys control_runtime_system_toolkit >= 3.0, < 3.5.15.30 cpe:2.3:a:codesys:control_runtime_system_toolkit:*:*:*:*:*:*:*:*
codesys control_win >= 3.5.9.80, < 3.5.15.30 cpe:2.3:a:codesys:control_win:*:*:*:*:*:*:*:*
codesys gateway >= 3.5.15.10, < 3.5.15.30 cpe:2.3:a:codesys:gateway:*:*:*:*:*:*:*:*
codesys hmi >= 3.5.10.0, < 3.5.15.30 cpe:2.3:a:codesys:hmi:*:*:*:*:*:*:*:*
codesys safety_sil2 >= 3.0, < 3.5.15.30 cpe:2.3:a:codesys:safety_sil2:*:*:*:*:*:*:*:*
codesys simulation_runtime >= 3.5.9.40, < 3.5.15.30 cpe:2.3:a:codesys:simulation_runtime:*:*:*:*:*:*:*:*

References for CVE-2020-7052

cvelogic Threat Intelligence