CVE-2017-20223

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.2.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "SDT-CS3B1", "source": "cna", "vendor": "Telesquare"}, "product": "sdt-cs3b1", "vendor": "telesquare"}], "analysis": {"en": {"generated_at": "2026-03-22T15:36:59.644360+00:00", "value": {"mitigation_remediation": ["Verify the firmware version deployed on each SDT\u2011CS3B1 router", "If a vendor patch that fixes the IDOR flaw is available, install it as soon as possible", "Restrict access to the router\u2019s management interface to trusted hosts only, for example by implementing network segmentation or firewall rules", "Disable any unused management interfaces or APIs to limit exposure", "Regularly review router logs for signatures of unauthorized configuration access"], "summary": {"action": "Immediate Patch", "impact": "Authorization Bypass"}, "threat_synthesis": {"affected_systems": "Devices that operate on the Telesquare SDT\u2011CS3B1 LTE router with firmware versions 1.1.0 or 1.2.0 are affected. Any router running these firmware releases remains vulnerable unless the firmware is updated to a patched version or mitigations are otherwise applied.", "description_and_impact": "An insecure direct object reference flaw in the firmware of Telesquare SDT\u2011CS3B1 LTE routers allows attackers to manipulate request parameters and gain unauthorized access to protected resources, exposing sensitive configuration and operational functions. The weakness, identified as CWE\u2011639, permits retrieval or modification of data that should be protected, threatening the confidentiality and integrity of the device.", "risk_and_exploitability": "The vulnerability carries a CVSS score of 9.3, signifying critical severity, but its EPSS score is below 1\u202f% and it is not listed in CISA\u2019s KEV catalog, suggesting a low likelihood of widespread exploitation. Based on the description, the attack likely proceeds by sending crafted HTTP requests that manipulate user\u2011supplied parameters to reference protected objects and bypass authentication controls."}}}}, "created": "2026-03-16T09:58:39.415158+00:00", "updated": "2026-03-23T14:00:45.573270+00:00", "vendors": ["telesquare", "telesquare$PRODUCT$sdt-cs3b1"]}