CVE-2021-30188
CRITICAL
9.8
CVSS Score
Published: May 25, 2021 at 12:33 PM UTC
Updated: June 17, 2026 at 03:49 AM UTC
55 products affected across 2 vendors750-8202 Firmware750-862 Firmware750-823 Firmware
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Severity
CRITICAL9.8
Exploit prediction
EPSS 1%
Description
CODESYS V2 runtime system SP before 2.4.7.55 has a Stack-based Buffer Overflow.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 2.4.7.55
Affected range stops below 2.4.7.55, so it looks safe — our inference, not a vendor statement
v < 03.06.19_(18)
Affected range stops below 03.06.19_(18), so it looks safe — our inference, not a vendor statement
wago-750-8202 (same device)
v < 03.06.19_(18)
Affected range stops below 03.06.19_(18), so it looks safe — our inference, not a vendor statement
wago-750-8203 (same device)
v < 03.06.19_(18)
Affected range stops below 03.06.19_(18), so it looks safe — our inference, not a vendor statement
wago-750-8204 (same device)
v < 03.06.19_(18)
Affected range stops below 03.06.19_(18), so it looks safe — our inference, not a vendor statement
wago-750-8206 (same device)
v < 03.06.19_(18)
Affected range stops below 03.06.19_(18), so it looks safe — our inference, not a vendor statement
wago-750-8207 (same device)
v < 03.06.19_(18)
Affected range stops below 03.06.19_(18), so it looks safe — our inference, not a vendor statement
wago-750-8208 (same device)
v < 03.06.19_(18)
Affected range stops below 03.06.19_(18), so it looks safe — our inference, not a vendor statement
wago-750-8210 (same device)
v < 03.06.19_(18)
Affected range stops below 03.06.19_(18), so it looks safe — our inference, not a vendor statement
wago-750-8211 (same device)
v < 03.06.19_(18)
Affected range stops below 03.06.19_(18), so it looks safe — our inference, not a vendor statement
wago-750-8212 (same device)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
x_refsource_MISCPermissions RequiredVendor Advisory
Source: [email protected]
https://customers.codesys.com/index.phpx_refsource_MISCVendor Advisory
Source: [email protected]
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14725&token=08691519ef764b252630759eff925890176ecd78&download=CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusANALYZED
CWE
CWE-787
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