CVE-2021-27420
MEDIUMGE Multilin UR Series Firmware < 8.10 - Denial of Service via Unsupported HTTP Verb Handling
Title source: llmDescription
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.
References (2)
Core 2
Core References
Mitigation, Third Party Advisory, US Government Resource x_refsource_confirm
https://www.cisa.gov/uscert/ics/advisories/icsa-21-075-02
Permissions Required, Vendor Advisory x_refsource_confirm
https://www.gegridsolutions.com/Passport/Login.aspx
Scores
CVSS v3
5.3
EPSS
0.0102
EPSS Percentile
59.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-20
Status
published
Products (19)
ge/multilin_b30_firmware
< 8.10
ge/multilin_b90_firmware
< 8.10
ge/multilin_c30_firmware
< 8.10
ge/multilin_c60_firmware
< 8.10
ge/multilin_c70_firmware
< 8.10
ge/multilin_c95_firmware
< 8.10
ge/multilin_d30_firmware
< 8.10
ge/multilin_d60_firmware
< 8.10
ge/multilin_f35_firmware
< 8.10
ge/multilin_f60_firmware
< 8.10
... and 9 more
Published
Mar 23, 2022
Tracked Since
Feb 18, 2026