CVE-2020-8233: A command injection vulnerability exists in EdgeSwitch firmware <v1.9.0 that allowed an authenticated read-onl

Q: How urgent is CVE-2020-8233?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited

This month

HIGH 8.8UPGRADEDOWNGRADEMITIGATE

CVE-2020-8233 is a high-severity flaw (CVSS 8.8) affecting edgeswitch firmware, backports sle, leap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
EPSS top 9%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	4.4% (top 9%)
CISA exploited list	No
Weakness	CWE-77, CWE-78
Published	2020-08-17
Last modified	2026-06-17

Publisher (CNA): HackerOne · Vendor: opensuse · ui

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-08-17 16:15 UTCPublished CVE record published
2026-06-17 03:26 UTCUpdated Record last modified

ui edgeswitch firmware UPGRADE

Affected: < 1.9.0

Fixed in: 1.9.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy edgeswitch-firmware || rpm -q edgeswitch-firmware || edgeswitch-firmware --version

2. UPGRADE to 1.9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade edgeswitch-firmware

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade edgeswitch-firmware

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

opensuse backports sle DOWNGRADE

Affected: 15.0 sp1 · 15.0 sp2

Fixed in: no fixed release known

Safe to downgrade to: a release before 15.0

1. Check installed version

apt-cache policy backports-sle || rpm -q backports-sle || backports-sle --version

2. No fixed release: DOWNGRADE to a release before 15.0 (Debian / Ubuntu)

apt-cache madison backports-sle sudo apt install backports-sle=<VERSION_BEFORE_15.0> sudo apt-mark hold backports-sle

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list backports-sle sudo dnf downgrade backports-sle-<VERSION_BEFORE_15.0> sudo dnf versionlock add backports-sle

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

opensuse leap MITIGATE

Affected: 15.1 · 15.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 15.1

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-8233?

edgeswitch firmware: upgrade to 1.9.0; backports sle: downgrade or apply the listed mitigation; leap: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-8233 being exploited?

CVE-2020-8233 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-8233 affect?

CVE-2020-8233 affects edgeswitch firmware, backports sle, leap. Severity is high (CVSS 8.8). 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 urgent is CVE-2020-8233?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited

Related CVEs

CVE-2020-8232 MEDIUM 6.5 UPGRADE An information disclosure vulnerability exists in EdgeMax EdgeSwitch firmware v1.9.0 that allowed read only us
CVE-2019-5446 HIGH 7.2 UPGRADE Command Injection in EdgeMAX EdgeSwitch prior to 1.8.2 allow an Admin user to execute commands as root.
CVE-2019-5445 MEDIUM 4.9 UPGRADE DoS in EdgeMAX EdgeSwitch prior to 1.8.2 allow an Admin user to Crash the SSH CLI interface by using crafted c

References

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