{"cve":{"cve_id":"CVE-2026-24061","is_kev":true,"kev_date_added":"2026-01-26","kev_vendor_project":"GNU","kev_product":"InetUtils","kev_vulnerability_name":"GNU InetUtils Argument Injection Vulnerability","kev_short_description":"GNU InetUtils contains an argument injection vulnerability in telnetd that could allow for remote authentication bypass via a \"-f root\" value for the USER environment variable.","kev_required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","kev_due_date":"2026-02-16","kev_known_ransomware":false,"kev_notes":"This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://cgit.git.savannah.gnu.org/cgit/inetutils.git ; https://codeberg.org/inetutils/inetutils/commit/ccba9f748aa8d50a38d7748e2e60362edd6a32cc; https://codeberg.org/inetutils/inetutils/commit/fd702c02497b2f398e739e3119bed0b23dd7aa7b ; https://nvd.nist.gov/vuln/detail/CVE-2026-24061","kev_cwes":["CWE-88"],"epss_score":0.98871,"epss_percentile":0.99921,"epss_as_of":"2026-06-23","description":"telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a \"-f root\" value for the USER environment variable.","published_at":"2026-01-21T06:42:17.134000Z","last_modified_at":null,"cvss_v3_score":9.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-88"],"nvd_references":["https://www.openwall.com/lists/oss-security/2026/01/20/2","https://www.openwall.com/lists/oss-security/2026/01/20/8","https://www.gnu.org/software/inetutils/","https://lists.gnu.org/archive/html/bug-inetutils/2026-01/msg00004.html","https://codeberg.org/inetutils/inetutils/commit/fd702c02497b2f398e739e3119bed0b23dd7aa7b","https://codeberg.org/inetutils/inetutils/commit/ccba9f748aa8d50a38d7748e2e60362edd6a32cc","https://www.vicarius.io/vsociety/posts/cve-2026-24061-detection-script-remote-authentication-bypass-in-gnu-inetutils-package","https://www.vicarius.io/vsociety/posts/cve-2026-24061-mitigation-script-remote-authentication-bypass-in-gnu-inetutils-package"],"vuln_status":null,"trending_score":0.6105163657535341,"is_trending":true,"has_trended":true,"trended_number_one":false,"trending_peak_score":0.6105163657535341,"trending_peak_rank":15,"started_trending_at":"2026-06-29T02:30:27.366045Z","trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:31.350578Z","updated_at":"2026-06-29T02:30:27.550645Z"},"effective_severity":"CRITICAL","badges":["kev","poc","trending","epss"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"gnu","vendor_name":"gnu","product_slug":"inetutils","product_name":"inetutils","version_start":"1.9.3","version_start_inclusive":true,"version_end":"2.7","version_end_inclusive":true,"cpe23_uri":"cve5:gnu:inetutils:1.9.3:2.7"}],"exploit_refs":[{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/code/cves/2026/CVE-2026-24061.yaml","title":"GNU Inetutils telnetd - Authentication Bypass","author":"pussycat0x","disclosed_at":null}],"news":[],"references":[{"url":"https://www.openwall.com/lists/oss-security/2026/01/20/2","source_type":"MAILING_LIST","tags":["mailing-list"]},{"url":"https://www.openwall.com/lists/oss-security/2026/01/20/8","source_type":"MAILING_LIST","tags":["mailing-list"]},{"url":"https://www.gnu.org/software/inetutils/","source_type":"MISC","tags":[]},{"url":"https://lists.gnu.org/archive/html/bug-inetutils/2026-01/msg00004.html","source_type":"MAILING_LIST","tags":["mailing-list"]},{"url":"https://codeberg.org/inetutils/inetutils/commit/fd702c02497b2f398e739e3119bed0b23dd7aa7b","source_type":"MISC","tags":["patch"]},{"url":"https://codeberg.org/inetutils/inetutils/commit/ccba9f748aa8d50a38d7748e2e60362edd6a32cc","source_type":"MISC","tags":["patch"]},{"url":"https://www.vicarius.io/vsociety/posts/cve-2026-24061-detection-script-remote-authentication-bypass-in-gnu-inetutils-package","source_type":"MISC","tags":[]},{"url":"https://www.vicarius.io/vsociety/posts/cve-2026-24061-mitigation-script-remote-authentication-bypass-in-gnu-inetutils-package","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-01-21T06:42:17.134000Z","label":"CVE published","source":null},{"type":"cisa_reported","at":"2026-01-26T00:00:00Z","label":"Added to CISA KEV catalog","source":"kev"},{"type":"poc_available","at":"2026-06-24T00:29:48.638073Z","label":"Public PoC available","source":"nuclei"},{"type":"cvss_changed","at":"2026-06-28T17:51:54.153642Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:51:54.153642Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:51:54.153642Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"started_trending","at":"2026-06-29T02:30:27.366045Z","label":"Started trending","source":null}]}