{"cve":{"cve_id":"CVE-1999-1540","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00256,"epss_percentile":0.16749,"epss_as_of":"2026-06-23","description":"shell-lock in Cactus Software Shell Lock uses weak encryption (trivial encoding) which allows attackers to easily decrypt and obtain the source code.","published_at":"2001-09-12T04:00:00Z","last_modified_at":"2026-06-16T21:50:40.570000Z","cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"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":null,"nvd_references":["http://marc.info/?l=bugtraq&m=93916168802365&w=2","http://www.atstake.com/research/advisories/1999/shell-lock.txt","https://exchange.xforce.ibmcloud.com/vulnerabilities/3356"],"vuln_status":"Modified","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:02:04.113876Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"cactus-software","vendor_name":"cactus_software","product_slug":"shell-lock","product_name":"shell-lock","version_start":null,"version_start_inclusive":null,"version_end":null,"version_end_inclusive":null,"cpe23_uri":"cpe:2.3:a:cactus_software:shell-lock:*:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"http://marc.info/?l=bugtraq&m=93916168802365&w=2","source_type":"MAILING_LIST","tags":["mailing-list"]},{"url":"http://www.atstake.com/research/advisories/1999/shell-lock.txt","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/3356","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2001-09-12T04:00:00Z","label":"CVE published","source":null}]}