High severity7.5NVD Advisory· Published Jun 18, 2021· Updated Jun 17, 2026
CVE-2021-33823
CVE-2021-33823
Description
An issue was discovered on MOXA Mgate MB3180 Version 2.1 Build 18113012. Attacker could send a huge amount of TCP SYN packet to make web service's resource exhausted. Then the web server is denial-of-service.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- MOXA/Mgate MB3180description
- Range: = 2.1 build 18113012
Patches
Vulnerability mechanics
References
2- github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33823.mdnvdExploitThird Party Advisory
- www.moxa.com/en/products/industrial-edge-connectivity/protocol-gateways/modbus-tcp-gateways/mgate-mb3180-mb3280-mb3480-seriesnvdProductVendor Advisory
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