CVE-2023-37559 | CODESYS Improper Validation of Consistency within Input in multiple products

After successful authentication as a user in multiple Codesys products in multiple versions, specific crafted network communication requests with inconsistent content can cause the CmpAppForce component to read internally from an invalid address, potentially leading to a denial-of-service condition. This vulnerability is different to CVE-2023-37558

Published: 2023-08-03 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-37559 is rated Moderate Risk (40.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.20%). 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-2023-37559

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 2026-05-31 0.08% 0.20% +0.12%
2 2025-11-21 0.30% 0.08% -0.22%
3 2025-11-18 — 0.30% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-37559

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]

Weakness enumeration for CVE-2023-37559

Affected software / configurations for CVE-2023-37559

Vendor Product Version Raw CPE
codesys control_for_beaglebone_sl < 4.10.0.0 cpe:2.3:a:codesys:control_for_beaglebone_sl:*:*:*:*:*:*:*:*
codesys control_for_empc-a\/imx6_sl < 4.10.0.0 cpe:2.3:a:codesys:control_for_empc-a\/imx6_sl:*:*:*:*:*:*:*:*
codesys control_for_iot2000_sl < 4.10.0.0 cpe:2.3:a:codesys:control_for_iot2000_sl:*:*:*:*:*:*:*:*
codesys control_for_linux_sl < 4.10.0.0 cpe:2.3:a:codesys:control_for_linux_sl:*:*:*:*:*:*:*:*
codesys control_for_pfc100_sl < 4.10.0.0 cpe:2.3:a:codesys:control_for_pfc100_sl:*:*:*:*:*:*:*:*
codesys control_for_pfc200_sl < 4.10.0.0 cpe:2.3:a:codesys:control_for_pfc200_sl:*:*:*:*:*:*:*:*
codesys control_for_plcnext_sl < 4.10.0.0 cpe:2.3:a:codesys:control_for_plcnext_sl:*:*:*:*:*:*:*:*
codesys control_for_raspberry_pi_sl < 4.10.0.0 cpe:2.3:a:codesys:control_for_raspberry_pi_sl:*:*:*:*:*:*:*:*
codesys control_for_wago_touch_panels_600_sl < 4.10.0.0 cpe:2.3:a:codesys:control_for_wago_touch_panels_600_sl:*:*:*:*:*:*:*:*
codesys control_rte_sl < 3.5.19.20 cpe:2.3:a:codesys:control_rte_sl:*:*:*:*:*:*:*:*
codesys control_rte_sl_\(for_beckhoff_cx\) < 3.5.19.20 cpe:2.3:a:codesys:control_rte_sl_\(for_beckhoff_cx\):*:*:*:*:*:*:*:*
codesys control_runtime_system_toolkit < 3.5.19.20 cpe:2.3:a:codesys:control_runtime_system_toolkit:*:*:*:*:*:*:*:*
codesys control_win_sl < 3.5.19.20 cpe:2.3:a:codesys:control_win_sl:*:*:*:*:*:*:*:*
codesys development_system < 3.5.19.20 cpe:2.3:a:codesys:development_system:*:*:*:*:*:*:*:*
codesys hmi < 3.5.19.20 cpe:2.3:a:codesys:hmi:*:*:*:*:*:*:*:*
codesys safety_sil2 < 3.5.19.20 cpe:2.3:a:codesys:safety_sil2:*:*:*:*:*:*:*:*

References for CVE-2023-37559

URL Tags
https://cert.vde.com/en/advisories/VDE-2023-019/ Third Party Advisory
cvelogic Threat Intelligence