Medium severity5.3NVD Advisory· Published Mar 23, 2022· Updated Jun 17, 2026
CVE-2021-27420
CVE-2021-27420
Description
GE UR firmware versions prior to version 8.1x web server task does not properly handle receipt of unsupported HTTP verbs, resulting in the web server becoming temporarily unresponsive after receiving a series of unsupported HTTP requests. When unresponsive, the web server is inaccessible. By itself, this is not particularly significant as the relay remains effective in all other functionality and communication channels.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Range: <8.1x
- GE/UR familyv5Range: unspecified
Patches
Vulnerability mechanics
References
2- www.cisa.gov/uscert/ics/advisories/icsa-21-075-02nvdMitigationThird Party AdvisoryUS Government Resource
- www.gegridsolutions.com/Passport/Login.aspxnvdPermissions RequiredVendor Advisory
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