CVE-2023-49140

Denial-of-service (DoS) vulnerability exists in commplex-link service of HMI GC-A2 series. If a remote unauthenticated attacker sends a specially crafted packets to specific ports, a denial-of-service (DoS) condition may occur.

Published: 2023-12-12 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-49140 is rated Moderate Risk (53.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.57%). 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-2023-49140

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 0.47% 0.57% +0.11%
2 2025-11-18 0.57% 0.47% -0.11%
3 2025-11-16 — 0.57% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-49140

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/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: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: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.
 3.9 3.6 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/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: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: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.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-49140

Affected software / configurations for CVE-2023-49140

Vendor Product Version Raw CPE
jtekt gc-a22w-cw_firmware — cpe:2.3:o:jtekt:gc-a22w-cw_firmware:*:*:*:*:*:*:*:*
jtekt gc-a24w-c\(w\)_firmware — cpe:2.3:o:jtekt:gc-a24w-c\(w\)_firmware:*:*:*:*:*:*:*:*
jtekt gc-a26w-c\(w\)_firmware — cpe:2.3:o:jtekt:gc-a26w-c\(w\)_firmware:*:*:*:*:*:*:*:*
jtekt gc-a24_firmware — cpe:2.3:o:jtekt:gc-a24_firmware:*:*:*:*:*:*:*:*
jtekt gc-a24-m_firmware — cpe:2.3:o:jtekt:gc-a24-m_firmware:*:*:*:*:*:*:*:*
jtekt gc-a25_firmware — cpe:2.3:o:jtekt:gc-a25_firmware:*:*:*:*:*:*:*:*
jtekt gc-a26_firmware — cpe:2.3:o:jtekt:gc-a26_firmware:*:*:*:*:*:*:*:*
jtekt gc-a26-j2_firmware — cpe:2.3:o:jtekt:gc-a26-j2_firmware:*:*:*:*:*:*:*:*
jtekt gc-a27-c_firmware — cpe:2.3:o:jtekt:gc-a27-c_firmware:*:*:*:*:*:*:*:*
jtekt gc-a28-c_firmware — cpe:2.3:o:jtekt:gc-a28-c_firmware:*:*:*:*:*:*:*:*

References for CVE-2023-49140

cvelogic Threat Intelligence