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CVE-2021-27420

MEDIUM
Published 2022-03-23T19:46:24.000Z
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Expert Analysis

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CVSS Score

V3.1
5.3
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.002
probability
of exploitation in the wild

There is a 0.2% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.442
Higher than 44.2% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
LOW

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

GE

UR family

Affected Versions:

unspecified

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-vw3w-wmxj-qpxw

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-27420
WEB https://www.cisa.gov/uscert/ics/advisories/icsa-21-075-02
WEB https://www.gegridsolutions.com/Passport/Login.aspx

Advisory provided by GitHub Security Advisory Database. Published: March 24, 2022, Modified: April 2, 2022

References

https://www.cisa.gov/uscert/ics/advisories/icsa-21-075-02
https://www.gegridsolutions.com/Passport/Login.aspx
Published: 2022-03-23T19:46:24.000Z
Last Modified: 2025-04-16T16:40:57.091Z
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