750 893 Firmware
CVE-2021-30188
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
CODESYS V2 runtime system SP before 2.4.7.55 has a Stack-based Buffer Overflow.
AnalysisAI
CODESYS V2 runtime system SP before 2.4.7.55 has a Stack-based Buffer Overflow. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. CODESYS V2 runtime system SP before 2.4.7.55 has a Stack-based Buffer Overflow. Affected products include: Wago 750-893 Firmware, Wago 750-891 Firmware, Wago 750-890 Firmware, Wago 750-889 Firmware, Wago 750-885 Firmware. Version information: before 2.4.7.55.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).
More in 750 893 Firmware
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CODESYS V2 Web-Server before 1.1.9.20 has Improper Access Control. Rated critical severity (CVSS 9.8), this vulnerabilit
CODESYS V2 Web-Server before 1.1.9.20 has a Stack-based Buffer Overflow. Rated critical severity (CVSS 9.8), this vulner
CODESYS V2 Web-Server before 1.1.9.20 has an Out-of-bounds Read. Rated critical severity (CVSS 9.1), this vulnerability
A crafted request with invalid offsets may cause an out-of-bounds read or write access in CODESYS V2 Runtime Toolkit 32
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Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Buffer Overflow
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External POC / Exploit Code
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