{"cveID":"CVE-2023-27997","vendorProject":"Fortinet","product":"FortiOS and FortiProxy SSL-VPN","vulnerabilityName":"Fortinet FortiOS and FortiProxy SSL-VPN Heap-Based Buffer Overflow Vulnerability","dateAdded":"2023-06-13","shortDescription":"Fortinet FortiOS and FortiProxy SSL-VPN contain a heap-based buffer overflow vulnerability which can allow an unauthenticated, remote attacker to execute code or commands via specifically crafted requests.","requiredAction":"Apply updates per vendor instructions.","dueDate":"2023-07-04","knownRansomwareCampaignUse":"Known","notes":"https://www.fortiguard.com/psirt/FG-IR-23-097;  https://nvd.nist.gov/vuln/detail/CVE-2023-27997","cwes":["CWE-122"],"year":2023,"state":"mapped","stale_reasons":[],"mappings":[{"domain":"enterprise","cve":"CVE-2023-27997","technique":"T1190","technique_name_at_mapping":"Exploit Public-Facing Application","mapping_type":"exploitation_technique","capability_group":"buffer_overflow","comments":"This buffer overflow vulnerability allows adversaries to remotely execute arbitrary code via specially crafted requests.\n\nAdversaries have been observed adding accounts to config files ","references":["https://www.rapid7.com/blog/post/2023/06/12/etr-cve-2023-27997-critical-fortinet-fortigate-remote-code-execution-vulnerability/"],"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-2023-27997","technique":"T1574","technique_name_at_mapping":"Hijack Execution Flow","mapping_type":"exploitation_technique","capability_group":"buffer_overflow","comments":"This buffer overflow vulnerability allows adversaries to remotely execute arbitrary code via specially crafted requests.\n\nAdversaries have been observed adding accounts to config files ","references":["https://www.rapid7.com/blog/post/2023/06/12/etr-cve-2023-27997-critical-fortinet-fortigate-remote-code-execution-vulnerability/"],"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-2023-27997","technique":"T1136","technique_name_at_mapping":"Create Account","mapping_type":"primary_impact","capability_group":"buffer_overflow","comments":"This buffer overflow vulnerability allows adversaries to remotely execute arbitrary code via specially crafted requests.\n\nAdversaries have been observed adding accounts to config files ","references":["https://www.rapid7.com/blog/post/2023/06/12/etr-cve-2023-27997-critical-fortinet-fortigate-remote-code-execution-vulnerability/"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"}],"techniques":[{"id":"T1136","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Create Account","name_at_mapping":"Create Account","renamed":false,"revoked_by":null,"mapping_types":["primary_impact"],"sigma_rule_count":3,"has_detection_strategy":true},{"id":"T1190","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Exploit Public-Facing Application","name_at_mapping":"Exploit Public-Facing Application","renamed":false,"revoked_by":null,"mapping_types":["exploitation_technique"],"sigma_rule_count":149,"has_detection_strategy":true},{"id":"T1574","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Hijack Execution Flow","name_at_mapping":"Hijack Execution Flow","renamed":false,"revoked_by":null,"mapping_types":["exploitation_technique"],"sigma_rule_count":8,"has_detection_strategy":true}],"mapping_types":["exploitation_technique","primary_impact"],"has_exploitation_technique":true,"mapping_attack_versions":["16.1"],"mapping_domains":["enterprise"],"sigma_coverage":"full","sigma_rules_tagged_cve":["31e4e649-7394-4fd2-9ae7-dbc61eebb550"],"added_after_mapping_snapshot":false,"_source":"kevmap","_built":"2026-08-24 19:45 UTC","_attack_version":"19.2"}