How severe is CVE-2021-30028?

CVE-2021-30028 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-30028 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30028?

CVE-2021-30028 affects Sooteway Wi-fi Range Extender Project Sooteway Wi-fi Range Extender. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30028?

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-2021-30028 published?

CVE-2021-30028 was published on 2022-05-20 and last updated on 2026-06-17.

CVE-2021-30028

CVE-2021-30028 is a high-severity vulnerability in Sooteway Wi-fi Range Extender Project Sooteway Wi-fi Range Extender with a CVSS 3.x base score of 7.2. 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-287.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 9.0
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Sooteway Wi-fi Range Extender Project Sooteway Wi-fi Range Extender
Published: 2022-05-20
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2021-30028?: 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 severe is CVE-2021-30028?: CVE-2021-30028 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-30028 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30028?: CVE-2021-30028 affects Sooteway Wi-fi Range Extender Project Sooteway Wi-fi Range Extender. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30028?: 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-2021-30028 published?: CVE-2021-30028 was published on 2022-05-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:sooteway_wi-fi_range_extender_project:sooteway_wi-fi_range_extender:1.5:*:*:*:*:*:*:*

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