{"cveID":"CVE-2024-40891","vendorProject":"Zyxel","product":"DSL CPE Devices","vulnerabilityName":"Zyxel DSL CPE OS Command Injection Vulnerability","dateAdded":"2025-02-11","shortDescription":"Multiple Zyxel DSL CPE devices contain a post-authentication command injection vulnerability in the management commands that could allow an authenticated attacker to execute OS commands via Telnet.","requiredAction":"The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.","dueDate":"2025-03-04","knownRansomwareCampaignUse":"Unknown","notes":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-and-insecure-default-credentials-vulnerabilities-in-certain-legacy-dsl-cpe-02-04-2025 ; https://www.zyxel.com/service-provider/global/en/security-advisories/zyxel-security-advisory-command-injection-insecure-in-certain-legacy-dsl-cpe-02-04-2025 ; https://nvd.nist.gov/vuln/detail/CVE-2024-40891","cwes":["CWE-78"],"year":2024,"state":"mapped","stale_reasons":[],"mappings":[{"domain":"enterprise","cve":"CVE-2024-40891","technique":"T1055","technique_name_at_mapping":"Process Injection","mapping_type":"exploitation_technique","capability_group":"command_execution","comments":"Zyxel CPE devices contain a Telnet interface that fails to properly sanitize input containing special characters, which facilitates code execution that can lead to data exfiltration, network infiltration, and total system compromise.","references":["https://www.cybersecuritydive.com/news/exploit-zero-day-vulnerability--zyxel/738611/"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"},{"domain":"enterprise","cve":"CVE-2024-40891","technique":"T1011","technique_name_at_mapping":"Exfiltration Over Other Network Medium","mapping_type":"primary_impact","capability_group":"command_execution","comments":"Zyxel CPE devices contain a Telnet interface that fails to properly sanitize input containing special characters, which facilitates code execution that can lead to data exfiltration, network infiltration, and total system compromise.","references":["https://www.cybersecuritydive.com/news/exploit-zero-day-vulnerability--zyxel/738611/"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"}],"techniques":[{"id":"T1011","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Exfiltration Over Other Network Medium","name_at_mapping":"Exfiltration Over Other Network Medium","renamed":false,"revoked_by":null,"mapping_types":["primary_impact"],"sigma_rule_count":0,"has_detection_strategy":true},{"id":"T1055","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Process Injection","name_at_mapping":"Process Injection","renamed":false,"revoked_by":null,"mapping_types":["exploitation_technique"],"sigma_rule_count":37,"has_detection_strategy":true}],"mapping_types":["exploitation_technique","primary_impact"],"has_exploitation_technique":true,"mapping_attack_versions":["16.1"],"mapping_domains":["enterprise"],"sigma_coverage":"partial","sigma_rules_tagged_cve":[],"added_after_mapping_snapshot":false,"_source":"kevmap","_built":"2026-08-23 05:47 UTC","_attack_version":"19.2"}