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CVE-2023-1620

WAGO: DoS in multiple products in multiple versions using Codesys

MEDIUM
4.9
CVSS Score
Published: June 26, 2023 at 06:19 AM UTC
Updated: June 17, 2026 at 05:28 AM UTC
153 products affected across 1 vendor750-8202 Firmware750-862 Firmware750-823 Firmware

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Severity
MEDIUM4.9
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

750-331 Firmware· WAGO
95%
v < fw17FW1 ≤ v ≤ FW14FW1
Affected range stops below fw17, so it looks safe — our inference, not a vendor statement
wago-750-331 (same device)
750-8202 /000-011 Firmware· WAGO
95%
v < fw22fw22
Affected range stops below fw22, so it looks safe — our inference, not a vendor statement
wago-750-8202-000-011 (same device)
750-8202 /000-012 Firmware· WAGO
95%
v < fw22fw22
Affected range stops below fw22, so it looks safe — our inference, not a vendor statement
wago-750-8202-000-012 (same device)
750-8202 /000-022 Firmware· WAGO
95%
v < fw22fw22
Affected range stops below fw22, so it looks safe — our inference, not a vendor statement
wago-750-8202-000-022 (same device)
750-8202 /025-000 Firmware· WAGO
95%
v < fw22fw22
Affected range stops below fw22, so it looks safe — our inference, not a vendor statement
wago-750-8202-025-000 (same device)
750-8202 /025-001 Firmware· WAGO
95%
v < fw22fw22
Affected range stops below fw22, so it looks safe — our inference, not a vendor statement
wago-750-8202-025-001 (same device)
750-8202 /025-002 Firmware· WAGO
95%
v < fw22fw22
Affected range stops below fw22, so it looks safe — our inference, not a vendor statement
wago-750-8202-025-002 (same device)
750-8202 /040-000 Firmware· WAGO
95%
v < fw22fw22
Affected range stops below fw22, so it looks safe — our inference, not a vendor statement
wago-750-8202-040-000 (same device)
750-8202 /040-001 Firmware· WAGO
95%
v < fw22fw22
Affected range stops below fw22, so it looks safe — our inference, not a vendor statement
wago-750-8202-040-001 (same device)
750-8202 Firmware· WAGO
95%
v < fw22FW1 ≤ v ≤ FW22 SP1FW1fw22
Affected range stops below fw22, so it looks safe — our inference, not a vendor statement
wago-750-8202 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryMitigationThird Party Advisory
Source: [email protected]
https://cert.vde.com/en/advisories/VDE-2023-006/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.9MEDIUMCERTVDE
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-1288

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