How severe is CVE-2020-8233?

CVE-2020-8233 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-8233 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8233?

CVE-2020-8233 primarily affects Ui Edgeswitch Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-8233?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-8233 published?

CVE-2020-8233 was published on 2020-08-17 and last updated on 2026-06-17.

CVE-2020-8233

CVE-2020-8233 is a high-severity vulnerability in Ui Edgeswitch Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Ui Edgeswitch Firmware
Published: 2020-08-17
Last modified: 2026-06-17

Description

A command injection vulnerability exists in EdgeSwitch firmware <v1.9.0 that allowed an authenticated read-only user to execute arbitrary shell commands over the HTTP interface, allowing them to escalate privileges.

Frequently asked questions

What is CVE-2020-8233?: A command injection vulnerability exists in EdgeSwitch firmware <v1.9.0 that allowed an authenticated read-only user to execute arbitrary shell commands over the HTTP interface, allowing them to escalate privileges.
How severe is CVE-2020-8233?: CVE-2020-8233 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-8233 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8233?: CVE-2020-8233 primarily affects Ui Edgeswitch Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-8233?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-8233 published?: CVE-2020-8233 was published on 2020-08-17 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:ui:edgeswitch_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*
cpe:2.3:a:opensuse:backports_sle:15.0:sp2:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*

More vulnerabilities in Ui Edgeswitch Firmware

CVE-2019-5446 — High (CVSS 7.2): Command Injection in EdgeMAX EdgeSwitch prior to 1.8.2 allow an Admin user to execute commands as root.
CVE-2018-12590 — High (CVSS 7.2): Ubiquiti Networks EdgeSwitch version 1.7.3 and prior suffer from an externally controlled format-string vulnerability…
CVE-2020-8232 — Medium (CVSS 6.5): An information disclosure vulnerability exists in EdgeMax EdgeSwitch firmware v1.9.0 that allowed read only users could…
CVE-2019-5445 — Medium (CVSS 4.9): DoS in EdgeMAX EdgeSwitch prior to 1.8.2 allow an Admin user to Crash the SSH CLI interface by using crafted commands.

All CVEs affecting Ui Edgeswitch Firmware →

Other CWE-78 (OS Command Injection) vulnerabilities

CVE-2026-56004 — Critical (CVSS 10.0): A shellcode injection in the mercurial handler of the obs tar_scm source service before version 0.12.4 could be used by…
CVE-2026-56415 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability within the debug.pl script that is…
CVE-2026-56413 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability in the ms_service.pl service, which listens…
CVE-2026-49869 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in…
CVE-2026-49261 — Critical (CVSS 10.0): MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through…
CVE-2026-10520 — Critical (CVSS 10.0): An OS Command Injection vulnerability in Ivanti Sentry before the R10.5.2, R10.6.2 and R10.7.1 versions allows a…

Browse all CWE-78 (OS Command Injection) vulnerabilities →