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CVE-2021-34568

WAGO I/O-Check Service prone to Allocation of Resources Without Limits or Throttling

HIGH
7.5
CVSS Score
Published: November 9, 2022 at 03:17 PM UTC
Updated: June 17, 2026 at 03:56 AM UTC
104 products affected across 1 vendor750-8202 Firmware752-8303 /8000-002 Firmware750-8202 /000-012 Firmware

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

In WAGO I/O-Check Service in multiple products an unauthenticated remote attacker can send a specially crafted packet containing OS commands to provoke a denial of service.

Affected

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

750-8100 Firmware· WAGO
95%
v < 181818 patch_118 patch_2
Affected range stops below 18, so it looks safe — our inference, not a vendor statement
wago-750-8100 (same device)
750-8101 /025-000 Firmware· WAGO
95%
v < 181818 patch_118 patch_2
Affected range stops below 18, so it looks safe — our inference, not a vendor statement
wago-750-8101-025-000 (same device)
750-8101 Firmware· WAGO
95%
v < 181818 patch_118 patch_2
Affected range stops below 18, so it looks safe — our inference, not a vendor statement
wago-750-8101 (same device)
750-8102 /025-000 Firmware· WAGO
95%
v < 181818 patch_118 patch_2
Affected range stops below 18, so it looks safe — our inference, not a vendor statement
wago-750-8102-025-000 (same device)
750-8102 Firmware· WAGO
95%
v < 181818 patch_118 patch_2
Affected range stops below 18, so it looks safe — our inference, not a vendor statement
wago-750-8102 (same device)
750-8202 /000-011 Firmware· WAGO
95%
v < 181818 patch_118 patch_2
Affected range stops below 18, 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 < 181818 patch_118 patch_2
Affected range stops below 18, 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 < 181818 patch_118 patch_2
Affected range stops below 18, 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 < 181818 patch_118 patch_2
Affected range stops below 18, 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 < 181818 patch_118 patch_2
Affected range stops below 18, so it looks safe — our inference, not a vendor statement
wago-750-8202-025-001 (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 Advisory
Source: [email protected]
https://cert.vde.com/en/advisories/VDE-2020-036/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

7.5HIGHCERTVDE
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-770

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