CVE-2020-14523 | Mitsubishi Electric Factory Automation Products Path Traversal

Multiple Mitsubishi Electric Factory Automation products have a vulnerability that allows an attacker to execute arbitrary code.

Published: 2022-02-11 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-14523 is rated Moderate Risk (62.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.17%). 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-2020-14523

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 2026-06-15 1.26% 2.17% +0.91%
2 2025-03-30 2.64% 1.26% -1.38%
3 2025-03-29 — 2.64% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-14523

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-2020-14523

Affected software / configurations for CVE-2020-14523

Vendor Product Version Raw CPE
mitsubishielectric cw_configurator <= 1.010l cpe:2.3:a:mitsubishielectric:cw_configurator:*:*:*:*:*:*:*:*
mitsubishielectric fr_configurator2 <= 1.22y cpe:2.3:a:mitsubishielectric:fr_configurator2:*:*:*:*:*:*:*:*
mitsubishielectric gx_works2 <= 1.595v cpe:2.3:a:mitsubishielectric:gx_works2:*:*:*:*:*:*:*:*
mitsubishielectric gx_works3 <= 1.063r cpe:2.3:a:mitsubishielectric:gx_works3:*:*:*:*:*:*:*:*
mitsubishielectric iu_configuration_tool <= 1.04 cpe:2.3:a:mitsubishielectric:iu_configuration_tool:*:*:*:*:*:*:*:*
mitsubishielectric iu_developer2 <= 1.08 cpe:2.3:a:mitsubishielectric:iu_developer2:*:*:*:*:*:*:*:*
mitsubishielectric melsoft_iq_appportal <= 1.17t cpe:2.3:a:mitsubishielectric:melsoft_iq_appportal:*:*:*:*:*:*:*:*
mitsubishielectric melsoft_navigator <= 2.70y cpe:2.3:a:mitsubishielectric:melsoft_navigator:*:*:*:*:*:*:*:*
mitsubishielectric mi_configurator — cpe:2.3:a:mitsubishielectric:mi_configurator:*:*:*:*:*:*:*:*
mitsubishielectric mr_configurator2 <= 1.110q cpe:2.3:a:mitsubishielectric:mr_configurator2:*:*:*:*:*:*:*:*
mitsubishielectric mt_works2 <= 1.156n cpe:2.3:a:mitsubishielectric:mt_works2:*:*:*:*:*:*:*:*
mitsubishielectric mx_component <= 4.20w cpe:2.3:a:mitsubishielectric:mx_component:*:*:*:*:*:*:*:*
mitsubishielectric rt_toolbox3 <= 1.70y cpe:2.3:a:mitsubishielectric:rt_toolbox3:*:*:*:*:*:*:*:*
mitsubishielectric rd78g4_firmware <= 10 cpe:2.3:o:mitsubishielectric:rd78g4_firmware:*:*:*:*:*:*:*:*
mitsubishielectric rd78g8_firmware <= 10 cpe:2.3:o:mitsubishielectric:rd78g8_firmware:*:*:*:*:*:*:*:*
mitsubishielectric rd78g16_firmware <= 10 cpe:2.3:o:mitsubishielectric:rd78g16_firmware:*:*:*:*:*:*:*:*
mitsubishielectric rd78g32_firmware <= 10 cpe:2.3:o:mitsubishielectric:rd78g32_firmware:*:*:*:*:*:*:*:*
mitsubishielectric rd78g64_firmware <= 10 cpe:2.3:o:mitsubishielectric:rd78g64_firmware:*:*:*:*:*:*:*:*
mitsubishielectric rd78ghv_firmware <= 10 cpe:2.3:o:mitsubishielectric:rd78ghv_firmware:*:*:*:*:*:*:*:*
mitsubishielectric rd78ghw_firmware <= 10 cpe:2.3:o:mitsubishielectric:rd78ghw_firmware:*:*:*:*:*:*:*:*

References for CVE-2020-14523

cvelogic Threat Intelligence