What is CVE-2021-27420?

CVE-2021-27420 is a medium-severity vulnerability in Ge Multilin B30, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2022-03-23.

How severe is CVE-2021-27420?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Improper input validation in Ge Multilin B30

CVE-2021-27420

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.011 (62.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

ics-cert@hq.dhs.gov (x_refsource_CONFIRM, US Government Resource, Third Party Advisory, Mitigation)
ics-cert@hq.dhs.gov (Vendor Advisory, Permissions Required, x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2021-27420?: CVE-2021-27420 is a medium-severity vulnerability in Ge Multilin B30, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2022-03-23.
How severe is CVE-2021-27420?: Medium severity. CVSS v3 base score is 5.3 out of 10.