How severe is CVE-2017-20224?

CVE-2017-20224 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-20224 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-20224?

CVE-2017-20224 affects Telesquare Sdt-cs3b1 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-20224?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2017-20224 have an EU (EUVD) identifier?

Yes. CVE-2017-20224 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-18941.

When was CVE-2017-20224 published?

CVE-2017-20224 was published on 2026-03-16 and last updated on 2026-06-17.

CVE-2017-20224

CVE-2017-20224 is a critical-severity vulnerability in Telesquare Sdt-cs3b1 Firmware with a CVSS 3.x base score of 9.8. 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2017-18941
Weakness: CWE-434
Affected product: Telesquare Sdt-cs3b1 Firmware
Published: 2026-03-16
Last modified: 2026-06-17

Description

Telesquare SKT LTE Router SDT-CS3B1 version 1.2.0 contains an arbitrary file upload vulnerability that allows unauthenticated attackers to upload malicious content by exploiting enabled WebDAV HTTP methods. Attackers can use PUT, DELETE, MKCOL, MOVE, COPY, and PROPPATCH methods to upload executable code, delete files, or manipulate server content for remote code execution or denial of service.

Frequently asked questions

What is CVE-2017-20224?: Telesquare SKT LTE Router SDT-CS3B1 version 1.2.0 contains an arbitrary file upload vulnerability that allows unauthenticated attackers to upload malicious content by exploiting enabled WebDAV HTTP methods. Attackers can use PUT, DELETE, MKCOL, MOVE, COPY, and PROPPATCH methods to upload executable code, delete files, or manipulate server content for remote code execution or denial of service.
How severe is CVE-2017-20224?: CVE-2017-20224 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-20224 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-20224?: CVE-2017-20224 affects Telesquare Sdt-cs3b1 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-20224?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2017-20224 have an EU (EUVD) identifier?: Yes. CVE-2017-20224 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-18941.
When was CVE-2017-20224 published?: CVE-2017-20224 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-2017-20223 — 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-2017-20222 — High (CVSS 7.5): Telesquare SKT LTE Router SDT-CS3B1 software version 1.2.0 contains an unauthenticated remote reboot vulnerability that…
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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