CVE-2020-14496 | Mitsubishi Electric Multiple Factory Automation Engineering Software Products (Update A) - Permission Issues

Successful exploitation of this vulnerability for multiple Mitsubishi Electric Factory Automation Engineering Software Products of various versions could allow an attacker to escalate privilege and execute malicious programs, which could cause a denial-of-service condition, and allow information to be disclosed, tampered with, and/or destroyed.

Published: 2022-05-19 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-14496 is rated Moderate Risk (44.6/100): CVSS High severity, with low exploitation likelihood (EPSS 0.13%). Review affected assets and schedule remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2020-14496

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 2025-11-21 0.31% 0.13% -0.18%
2 2025-11-18 0.11% 0.31% +0.20%
3 2025-03-30 — 0.11% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-14496

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.3 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.6 6.0 [email protected]
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:N)
No account or special rights needed—anonymous or random user is enough.
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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/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:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2020-14496

Affected software / configurations for CVE-2020-14496

Vendor Product Version Raw CPE
mitsubishielectric cpu_module_logging_configuration_tool < 1.106k cpe:2.3:a:mitsubishielectric:cpu_module_logging_configuration_tool:*:*:*:*:*:*:*:*
mitsubishielectric cw_configurator < 1.011m cpe:2.3:a:mitsubishielectric:cw_configurator:*:*:*:*:*:*:*:*
mitsubishielectric data_transfer < 3.41t cpe:2.3:a:mitsubishielectric:data_transfer:*:*:*:*:*:*:*:*
mitsubishielectric em_configurator < 1.015r cpe:2.3:a:mitsubishielectric:em_configurator:*:*:*:*:*:*:*:*
mitsubishielectric ezsocket < 4.6 cpe:2.3:a:mitsubishielectric:ezsocket:*:*:*:*:*:*:*:*
mitsubishielectric fr_configurator2 < 1.23z cpe:2.3:a:mitsubishielectric:fr_configurator2:*:*:*:*:*:*:*:*
mitsubishielectric gt_designer3 < 1.236w cpe:2.3:a:mitsubishielectric:gt_designer3:*:*:*:*:*:*:*:*
mitsubishielectric gt_softgot1000 < 3.245f cpe:2.3:a:mitsubishielectric:gt_softgot1000:*:*:*:*:*:*:*:*
mitsubishielectric gt_softgot2000 < 1.236w cpe:2.3:a:mitsubishielectric:gt_softgot2000:*:*:*:*:*:*:*:*
mitsubishielectric gx_logviewer < 1.106k cpe:2.3:a:mitsubishielectric:gx_logviewer:*:*:*:*:*:*:*:*
mitsubishielectric gx_works2 < 1.595v cpe:2.3:a:mitsubishielectric:gx_works2:*:*:*:*:*:*:*:*
mitsubishielectric gx_works3 < 1.065t cpe:2.3:a:mitsubishielectric:gx_works3:*:*:*:*:*:*:*:*
mitsubishielectric m_commdtm-hart < 1.01b cpe:2.3:a:mitsubishielectric:m_commdtm-hart:*:*:*:*:*:*:*:*
mitsubishielectric m_commdtm-io-link < 1.04e cpe:2.3:a:mitsubishielectric:m_commdtm-io-link:*:*:*:*:*:*:*:*
mitsubishielectric melfa-works < 4.4 cpe:2.3:a:mitsubishielectric:melfa-works:*:*:*:*:*:*:*:*
mitsubishielectric melsoft_fielddeviceconfigurator < 1.04e cpe:2.3:a:mitsubishielectric:melsoft_fielddeviceconfigurator:*:*:*:*:*:*:*:*
mitsubishielectric melsoft_navigator < 2.70y cpe:2.3:a:mitsubishielectric:melsoft_navigator:*:*:*:*:*:*:*:*
mitsubishielectric mh11_settingtool_version2 < 2.003d cpe:2.3:a:mitsubishielectric:mh11_settingtool_version2:*:*:*:*:*:*:*:*
mitsubishielectric motorizer < 1.010l cpe:2.3:a:mitsubishielectric:motorizer:*:*:*:*:*:*:*:*
mitsubishielectric mr_configurator2 < 1.106l cpe:2.3:a:mitsubishielectric:mr_configurator2:*:*:*:*:*:*:*:*
mitsubishielectric mt_works2 < 1.160s cpe:2.3:a:mitsubishielectric:mt_works2:*:*:*:*:*:*:*:*
mitsubishielectric mx_component < 4.20w cpe:2.3:a:mitsubishielectric:mx_component:*:*:*:*:*:*:*:*
mitsubishielectric network_interface_board_cc-link_ver.2_utility < 1.24a cpe:2.3:a:mitsubishielectric:network_interface_board_cc-link_ver.2_utility:*:*:*:*:*:*:*:*
mitsubishielectric network_interface_board_cc_ie_control_utility < 1.30g cpe:2.3:a:mitsubishielectric:network_interface_board_cc_ie_control_utility:*:*:*:*:*:*:*:*
mitsubishielectric network_interface_board_cc_ie_field_utility < 1.17t cpe:2.3:a:mitsubishielectric:network_interface_board_cc_ie_field_utility:*:*:*:*:*:*:*:*
mitsubishielectric network_interface_board_mneth_utility < 35m cpe:2.3:a:mitsubishielectric:network_interface_board_mneth_utility:*:*:*:*:*:*:*:*
mitsubishielectric px_developer < 1.53f cpe:2.3:a:mitsubishielectric:px_developer:*:*:*:*:*:*:*:*
mitsubishielectric rt_toolbox2 < 3.73b cpe:2.3:a:mitsubishielectric:rt_toolbox2:*:*:*:*:*:*:*:*
mitsubishielectric rt_toolbox3 < 1.80j cpe:2.3:a:mitsubishielectric:rt_toolbox3:*:*:*:*:*:*:*:*

References for CVE-2020-14496

URL Tags
https://www.cisa.gov/uscert/ics/advisories/icsa-20-212-02 Third Party Advisory US Government Resource
cvelogic Threat Intelligence