{"cveID":"CVE-2022-23131","vendorProject":"Zabbix","product":"Frontend","vulnerabilityName":"Zabbix Frontend Authentication Bypass Vulnerability","dateAdded":"2022-02-22","shortDescription":"Unsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAML.","requiredAction":"Apply updates per vendor instructions.","dueDate":"2022-03-08","knownRansomwareCampaignUse":"Unknown","notes":"https://nvd.nist.gov/vuln/detail/CVE-2022-23131","cwes":["CWE-290"],"year":2022,"state":"mapped","stale_reasons":[],"mappings":[{"domain":"enterprise","cve":"CVE-2022-23131","technique":"T1190","technique_name_at_mapping":"Exploit Public-Facing Application","mapping_type":"exploitation_technique","capability_group":"auth_bypass","comments":"This vulnerability is exploited by a malicious actor via improper validation via SAML to modify session data and escalate privileges to gain admin access to the Zabbix Frontend. This allows attackers to control the saml_data[username_attribute] value. This flaw enables unauthenticated users to bypass authentication and access the Zabbix dashboard as a highly-privileged user, such as the default \"Admin\" user. Additionally, incorrect handling of Zabbix installer files permits unauthenticated users to access and reconfigure servers. ","references":["https://www.sonarsource.com/blog/zabbix-case-study-of-unsafe-session-storage/","https://therecord.media/cisa-zabbix-servers-under-attack-with-recently-disclosed-vulnerability","https://www.bleepingcomputer.com/news/security/cisa-warns-of-actively-exploited-vulnerabilities-in-zabbix-servers/"],"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-2022-23131","technique":"T1059","technique_name_at_mapping":"Command and Scripting Interpreter","mapping_type":"secondary_impact","capability_group":"auth_bypass","comments":"This vulnerability is exploited by a malicious actor via improper validation via SAML to modify session data and escalate privileges to gain admin access to the Zabbix Frontend. This allows attackers to control the saml_data[username_attribute] value. This flaw enables unauthenticated users to bypass authentication and access the Zabbix dashboard as a highly-privileged user, such as the default \"Admin\" user. Additionally, incorrect handling of Zabbix installer files permits unauthenticated users to access and reconfigure servers. ","references":["https://www.sonarsource.com/blog/zabbix-case-study-of-unsafe-session-storage/","https://therecord.media/cisa-zabbix-servers-under-attack-with-recently-disclosed-vulnerability","https://www.bleepingcomputer.com/news/security/cisa-warns-of-actively-exploited-vulnerabilities-in-zabbix-servers/"],"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-2022-23131","technique":"T1078","technique_name_at_mapping":"Valid Accounts","mapping_type":"secondary_impact","capability_group":"auth_bypass","comments":"This vulnerability is exploited by a malicious actor via improper validation via SAML to modify session data and escalate privileges to gain admin access to the Zabbix Frontend. This allows attackers to control the saml_data[username_attribute] value. This flaw enables unauthenticated users to bypass authentication and access the Zabbix dashboard as a highly-privileged user, such as the default \"Admin\" user. Additionally, incorrect handling of Zabbix installer files permits unauthenticated users to access and reconfigure servers. ","references":["https://www.sonarsource.com/blog/zabbix-case-study-of-unsafe-session-storage/","https://therecord.media/cisa-zabbix-servers-under-attack-with-recently-disclosed-vulnerability","https://www.bleepingcomputer.com/news/security/cisa-warns-of-actively-exploited-vulnerabilities-in-zabbix-servers/"],"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-2022-23131","technique":"T1548","technique_name_at_mapping":"Abuse Elevation Control Mechanism","mapping_type":"primary_impact","capability_group":"auth_bypass","comments":"This vulnerability is exploited by a malicious actor via improper validation via SAML to modify session data and escalate privileges to gain admin access to the Zabbix Frontend. This allows attackers to control the saml_data[username_attribute] value. This flaw enables unauthenticated users to bypass authentication and access the Zabbix dashboard as a highly-privileged user, such as the default \"Admin\" user. Additionally, incorrect handling of Zabbix installer files permits unauthenticated users to access and reconfigure servers. ","references":["https://www.sonarsource.com/blog/zabbix-case-study-of-unsafe-session-storage/","https://therecord.media/cisa-zabbix-servers-under-attack-with-recently-disclosed-vulnerability","https://www.bleepingcomputer.com/news/security/cisa-warns-of-actively-exploited-vulnerabilities-in-zabbix-servers/"],"status":"complete","source_file":"kev-07.28.2025_attack-16.1-enterprise.json","attack_version":"16.1","kev_snapshot":"07/28/2025"}],"techniques":[{"id":"T1059","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Command and Scripting Interpreter","name_at_mapping":"Command and Scripting Interpreter","renamed":false,"revoked_by":null,"mapping_types":["secondary_impact"],"sigma_rule_count":95,"has_detection_strategy":true},{"id":"T1078","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Valid Accounts","name_at_mapping":"Valid Accounts","renamed":false,"revoked_by":null,"mapping_types":["secondary_impact"],"sigma_rule_count":56,"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":"T1548","domains":["enterprise"],"in_current_bundle":true,"live":true,"name_now":"Abuse Elevation Control Mechanism","name_at_mapping":"Abuse Elevation Control Mechanism","renamed":false,"revoked_by":null,"mapping_types":["primary_impact"],"sigma_rule_count":24,"has_detection_strategy":true}],"mapping_types":["exploitation_technique","primary_impact","secondary_impact"],"has_exploitation_technique":true,"mapping_attack_versions":["16.1"],"mapping_domains":["enterprise"],"sigma_coverage":"full","sigma_rules_tagged_cve":[],"added_after_mapping_snapshot":false,"_source":"kevmap","_built":"2026-08-23 05:47 UTC","_attack_version":"19.2"}