Cyber Resilience

CVE-2023-1620

Wago 750-8202 Firmware ≤ fw22

Published
26 June 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 4.9
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0085 55th percentile
Risk Priority 41 floored blend · peak EPSS

Summary

CVE-2023-1620 is a medium-severity Improper Validation of Consistency within Input (CWE-1288) vulnerability in Wago 750-8202 Firmware. Its CVSS base score is 4.9 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 45% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

Multiple WAGO devices in multiple versions may allow an authenticated remote attacker with high privileges to DoS the device by sending a specifically crafted packet to the CODESYS V2 runtime.

CWE(s)
CWE-1288

Related Threats

MITRE ATT&CK Enterprise Techniques

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-1619Same product: Wago 750-331
CVE-2024-8305Shared CWE-1288
CVE-2025-10929Shared CWE-1288
CVE-2024-31136Shared CWE-1288
CVE-2023-32701Shared CWE-1288
CVE-2024-31140Shared CWE-1288
CVE-2026-42982Shared CWE-1288
CVE-2026-14781Shared CWE-1288
CVE-2024-5953Shared CWE-1288
CVE-2025-2885Shared CWE-1288

Affected Assets

wago
750-331 firmware
≤ fw17
wago
750-8202 firmware
fw22 · ≤ fw22
wago
750-8202\/000-011 firmware
fw22 · ≤ fw22
wago
750-8202\/000-012 firmware
fw22 · ≤ fw22
wago
750-8202\/000-022 firmware
fw22 · ≤ fw22
wago
750-8202\/025-000 firmware
fw22 · ≤ fw22
wago
750-8202\/025-001 firmware
fw22 · ≤ fw22
wago
750-8202\/025-002 firmware
fw22 · ≤ fw22
wago
750-8202\/040-000 firmware
fw22 · ≤ fw22
wago
750-8202\/040-001 firmware
fw22 · ≤ fw22
+66 more product configuration(s) — see NVD for full list

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V2.2.2
  • V4.2.3
  • V12.3.2

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require consistency validation for complex inputs.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing can detect consistency flaws but does not prevent them at design time.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle requires input validation and consistency checks that directly address CWE-1288.

A.8.26 Application security requirements partial match
prevents

Application security requirements include validation of complex inputs and cross-field consistency.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles encourage robust input handling but do not specifically mandate consistency validation.

A.8.28 Secure coding partial match
prevents

Secure coding standards explicitly require validation of interrelated input fields to prevent CWE-1288.

References