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Vulnerability record · CVE-2020-8234 · published 21 August 2020

CVE-2020-8234: Ui edgemax firmware insufficient session expiration vulnerability

Ui · Edgemax Firmware

A vulnerability exists in The EdgeMax EdgeSwitch firmware <v1.9.1 where the EdgeSwitch legacy web interface SIDSSL cookie for admin can be guessed, enabling the attacker to obtain high privileges and get a root shell by a Command injection.

9.8 CVSS 3.1 Critical EPSS 3.4% · top 11.6% CWE-613 · Insufficient session expiration
9.8CVSS 3.1 base score, v2 10.0
3.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

A vulnerability exists in The EdgeMax EdgeSwitch firmware <v1.9.1 where the EdgeSwitch legacy web interface SIDSSL cookie for admin can be guessed, enabling the attacker to obtain high privileges and get a root shell by a Command injection.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://community.ui.com/releases/EdgeMAX-EdgeSwitch-Firmware-v1-9-1-v1-9-1/8a87dfc5-70f5-4055-8d67-570db1f5695c%2C
https://community.ui.com/releases/Security-advisory-bulletin-014-014/1c32c056-2c64-4e60-ac23-ce7d8f387821%2C
https://www.ui.com/download/edgemax Product
https://community.ui.com/releases/EdgeMAX-EdgeSwitch-Firmware-v1-9-1-v1-9-1/8a87dfc5-70f5-4055-8d67-570db1f5695c%2C
https://community.ui.com/releases/Security-advisory-bulletin-014-014/1c32c056-2c64-4e60-ac23-ce7d8f387821%2C
https://www.ui.com/download/edgemax Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2017-0938Ui airos uncontrolled resource consumption vulnerabilityDenial of Service attack in airMAX < 8.3.2 , airMAX < 6.0.7 and EdgeMAX < 1.9.7 allow attackers to use the Discovery Protocol in amplification attack…EPSS 21%

Source: NIST National Vulnerability Database (record CVE-2020-8234), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.