CVE-2023-1150 | WAGO: Series 750-3x/-8x prone to MODBUS server DoS

Uncontrolled resource consumption in Series WAGO 750-3x/-8x products may allow an unauthenticated remote attacker to DoS the MODBUS server with specially crafted packets.

Published: 2023-06-26 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-1150 is rated Moderate Risk (49.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.93%). 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-2023-1150

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 2026-06-26 0.70% 0.93% +0.23%
2 2026-06-15 0.25% 0.70% +0.45%
3 2026-03-21 — 0.25% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-1150

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]

Weakness enumeration for CVE-2023-1150

Affected software / configurations for CVE-2023-1150

Vendor Product Version Raw CPE
wago 750-363\/040-000_firmware < fw11 cpe:2.3:o:wago:750-363\/040-000_firmware:*:*:*:*:*:*:*:*
wago 750-362\/040-000_firmware < fw11 cpe:2.3:o:wago:750-362\/040-000_firmware:*:*:*:*:*:*:*:*
wago 750-362\/000-001_firmware < fw11 cpe:2.3:o:wago:750-362\/000-001_firmware:*:*:*:*:*:*:*:*
wago 750-891_firmware < fw11 cpe:2.3:o:wago:750-891_firmware:*:*:*:*:*:*:*:*
wago 750-365\/040-010_firmware < fw11 cpe:2.3:o:wago:750-365\/040-010_firmware:*:*:*:*:*:*:*:*
wago 750-364\/040-010_firmware < fw11 cpe:2.3:o:wago:750-364\/040-010_firmware:*:*:*:*:*:*:*:*
wago 750-362_firmware < fw11 cpe:2.3:o:wago:750-362_firmware:*:*:*:*:*:*:*:*
wago 750-363_firmware < fw11 cpe:2.3:o:wago:750-363_firmware:*:*:*:*:*:*:*:*
wago 750-823_firmware < fw11 cpe:2.3:o:wago:750-823_firmware:*:*:*:*:*:*:*:*
wago 750-832_firmware < fw11 cpe:2.3:o:wago:750-832_firmware:*:*:*:*:*:*:*:*
wago 750-832\/000-002_firmware < fw11 cpe:2.3:o:wago:750-832\/000-002_firmware:*:*:*:*:*:*:*:*
wago 750-862_firmware < fw11 cpe:2.3:o:wago:750-862_firmware:*:*:*:*:*:*:*:*
wago 750-890_firmware < fw11 cpe:2.3:o:wago:750-890_firmware:*:*:*:*:*:*:*:*
wago 750-890\/025-000_firmware < fw11 cpe:2.3:o:wago:750-890\/025-000_firmware:*:*:*:*:*:*:*:*
wago 750-890\/025-001_firmware < fw11 cpe:2.3:o:wago:750-890\/025-001_firmware:*:*:*:*:*:*:*:*
wago 750-890\/025-002_firmware < fw11 cpe:2.3:o:wago:750-890\/025-002_firmware:*:*:*:*:*:*:*:*
wago 750-890\/040-000_firmware < fw11 cpe:2.3:o:wago:750-890\/040-000_firmware:*:*:*:*:*:*:*:*
wago 750-893_firmware < fw11 cpe:2.3:o:wago:750-893_firmware:*:*:*:*:*:*:*:*

References for CVE-2023-1150

URL Tags
https://cert.vde.com/en/advisories/VDE-2023-005/ Third Party Advisory
cvelogic Threat Intelligence