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CVE-2020-25206: The web console for Mimosa B5, B5c, and C5x firmware through 2.8.0.2 allows authenticated command injection in

53
This month
HIGH 7.2UPGRADEUPGRADEUPGRADE

CVE-2020-25206 is a high-severity flaw (CVSS 7.2) affecting b5 firmware, b5c firmware, c5c firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The web console for Mimosa B5, B5c, and C5x firmware through 2.8.0.2 allows authenticated command injection in the Throughput, WANStats, PhyStats, and QosStats API classes. An attacker with access to a web console account may execute operating system commands on affected devices by sending crafted POST requests to the affected endpoints (/core/api/calls/Throughput.php, /core/api/calls/WANStats.php, /core/api/calls/PhyStats.php, /core/api/calls/Qo

Why this priority

  • High severity
  • EPSS top 7%: very likely to be exploited
  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score7.2 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededHigh
User interactionNone
EPSS exploit chance5.3% (top 7%)
CISA exploited listNo
WeaknessCWE-78
Published2021-07-20
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: mimosa

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

Am I affected?

Timeline

mimosa b5 firmware UPGRADE
Affected: >= 1.5.2 and <= 2.8.0.3
Fixed in: newer than 2.8.0.3
Safe to downgrade to: a release before 1.5.2
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.
mimosa b5c firmware UPGRADE
Affected: >= 1.5.2 and < 2.8.1.0
Fixed in: 2.8.1.0
Safe to downgrade to: a release before 1.5.2
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.
mimosa c5c firmware UPGRADE
Affected: >= 1.5.2 and < 2.8.1.0
Fixed in: 2.8.1.0
Safe to downgrade to: a release before 1.5.2
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-2020-25206?

b5 firmware: upgrade to newer than 2.8.0.3; b5c firmware: upgrade to 2.8.1.0; c5c firmware: upgrade to 2.8.1.0. Exact commands for each OS are on this page.

Is CVE-2020-25206 being exploited?

CVE-2020-25206 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-2020-25206 affect?

CVE-2020-25206 affects b5 firmware, b5c firmware, c5c firmware. Severity is high (CVSS 7.2). The web console for Mimosa B5, B5c, and C5x firmware through 2.8.0.2 allows authenticated command injection in the Throughput, WANStats, PhyStats, and QosStats API classes. An attacker with access to a web console account may execute operat

How urgent is CVE-2020-25206?

Priority 53/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

References

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