How severe is CVE-2017-20222?

CVE-2017-20222 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-20222 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-20222?

CVE-2017-20222 affects Telesquare Sdt-cs3b1 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-20222?

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.

Does CVE-2017-20222 have an EU (EUVD) identifier?

Yes. CVE-2017-20222 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-18938.

When was CVE-2017-20222 published?

CVE-2017-20222 was published on 2026-03-16 and last updated on 2026-06-17.

CVE-2017-20222

CVE-2017-20222 is a high-severity vulnerability in Telesquare Sdt-cs3b1 Firmware with a CVSS 3.x base score of 7.5. 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-306.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2017-18938
Weakness: CWE-306
Affected product: Telesquare Sdt-cs3b1 Firmware
Published: 2026-03-16
Last modified: 2026-06-17

Description

Telesquare SKT LTE Router SDT-CS3B1 software version 1.2.0 contains an unauthenticated remote reboot vulnerability that allows attackers to trigger device reboot without authentication. Attackers can send POST requests to the lte.cgi endpoint with the Command=Reboot parameter to cause denial of service by forcing the router to restart.

Frequently asked questions

What is CVE-2017-20222?: Telesquare SKT LTE Router SDT-CS3B1 software version 1.2.0 contains an unauthenticated remote reboot vulnerability that allows attackers to trigger device reboot without authentication. Attackers can send POST requests to the lte.cgi endpoint with the Command=Reboot parameter to cause denial of service by forcing the router to restart.
How severe is CVE-2017-20222?: CVE-2017-20222 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-20222 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-20222?: CVE-2017-20222 affects Telesquare Sdt-cs3b1 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-20222?: 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.
Does CVE-2017-20222 have an EU (EUVD) identifier?: Yes. CVE-2017-20222 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-18938.
When was CVE-2017-20222 published?: CVE-2017-20222 was published on 2026-03-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:telesquare:sdt-cs3b1_firmware:1.2.0:*:*:*:*:*:*:*

More vulnerabilities in Telesquare Sdt-cs3b1 Firmware

CVE-2017-20224 — Critical (CVSS 9.8): Telesquare SKT LTE Router SDT-CS3B1 version 1.2.0 contains an arbitrary file upload vulnerability that allows…
CVE-2017-20223 — Critical (CVSS 9.8): Telesquare SKT LTE Router SDT-CS3B1 firmware version 1.2.0 contains an insecure direct object reference vulnerability…
CVE-2021-46422 — Critical (CVSS 9.8): Telesquare SDT-CW3B1 1.1.0 is affected by an OS command injection vulnerability that allows a remote attacker to…
CVE-2018-12526 — Critical (CVSS 9.8): Telesquare SDT-CS3B1 and SDT-CW3B1 devices through 1.2.0 have a default factory account. Remote attackers can obtain…
CVE-2017-20221 — Medium (CVSS 4.3): Telesquare SKT LTE Router SDT-CS3B1 version 1.2.0 contains a cross-site request forgery vulnerability that allows…

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