CVE-2021-30028: SOOTEWAY Wi-Fi Range Extender v1.5 was discovered to use default credentials (the admin password for the admin

This month

HIGH 7.2MITIGATE

CVE-2021-30028 is a high-severity flaw (CVSS 7.2) affecting sooteway wi-fi range extender. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SOOTEWAY Wi-Fi Range Extender v1.5 was discovered to use default credentials (the admin password for the admin account) to access the TELNET service, allowing attackers to erase/read/write the firmware remotely.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-287
Published	2022-05-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: sooteway wi-fi range extender project

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

Am I affected?

Timeline

2022-05-20 15:15 UTCPublished CVE record published
2026-06-17 03:49 UTCUpdated Record last modified

sooteway wi-fi range extender project sooteway wi-fi range extender MITIGATE

Affected: 1.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.5

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-2021-30028?

sooteway wi-fi range extender: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-30028 being exploited?

CVE-2021-30028 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-2021-30028 affect?

CVE-2021-30028 affects sooteway wi-fi range extender. Severity is high (CVSS 7.2). SOOTEWAY Wi-Fi Range Extender v1.5 was discovered to use default credentials (the admin password for the admin account) to access the TELNET service, allowing attackers to erase/read/write the firmware remotely.

How urgent is CVE-2021-30028?

Priority 48/100. High severity; Public exploit reference

Software pages

Wi-Fi vulnerabilities

References

← Back to latest CVEs