{"status":"success","data":{"id":"CVE-2026-116606","slug":"cve-2026-116606-barracuda-networks-barracuda-email-security-gateway-esg-","title":"Barracuda Networks Barracuda Email Security Gateway (ESG) Barracuda Networks Email Security Gateway (ESG) Authentication Bypass Using an Alternate Path or Channel Vulnerability","summary":"Barracuda Networks Email Security Gateway (ESG) contains an authentication bypass using an alternate path or channel that could allow an unauthenticated remote attacker to invoke a configuration-import function and restore a crafted, compatible backup archive, resulting in unauthorized modification of the appliance’s global configuration. This vulnerability can be chained with CVE-2026-111560.","description":"Barracuda Networks Email Security Gateway (ESG) contains an authentication bypass using an alternate path or channel that could allow an unauthenticated remote attacker to invoke a configuration-import function and restore a crafted, compatible backup archive, resulting in unauthorized modification of the appliance’s global configuration. This vulnerability can be chained with CVE-2026-111560.","severity":"HIGH","cvss_score":7.8,"cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","cvss_metrics":{"scope":"UNCHANGED","integrity":"HIGH","attackVector":"NETWORK","availability":"NONE","confidentiality":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","privilegesRequired":"NONE"},"epss_score":0.08934,"epss_percentile":0.95313,"cisa_kev":true,"cisa_date_added":"2026-11-10","cisa_due_date":"2026-11-13","ransomware_campaign":"Unknown","threat_actors":["Unknown In-The-Wild Threat Cluster"],"exploit_status":"active_wild","cwes":[{"id":"CWE-288","name":"Common Weakness Enumeration Flaw"}],"affected_vendors":["Barracuda Networks"],"affected_products":[{"vendor":"Barracuda Networks","product":"Barracuda Email Security Gateway (ESG)","fixed_version":"Refer to vendor advisory for patch release","affected_versions":"All vulnerable builds prior to vendor emergency patch"}],"ai_analysis":{"sigma_rule":"title: Suspicious CVE-2026-116606 Activity\nstatus: high\nlogsource:\n  category: process_creation\ndetection:\n  selection:\n    CommandLine|contains: 'CVE-2026-116606'\n  condition: selection","analyzed_at":"2026-11-13T06:47:39.836Z","model_provider":"Gemini 2.0 Flash Security Sentinel","executive_summary":"Barracuda Networks Email Security Gateway (ESG) contains an authentication bypass using an alternate path or channel that could allow an unauthenticated remote attacker to invoke a configuration-import function and restore a crafted, compatible backup archive, resulting in unauthorized modification of the appliance’s global configuration. This vulnerability can be chained with CVE-2026-111560.","detection_guidance":"Monitor endpoint execution logs and network traffic for unusual connections originating from Barracuda Email Security Gateway (ESG).","mitigation_playbook":["Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","Apply security updates according to vendor instructions.","Ensure network firewalls restrict exposure of administrative ports."],"technical_root_cause":"Vulnerability in Barracuda Email Security Gateway (ESG) allowing anomalous execution paths when processing untrusted input.","exploitation_mechanism":"Threat actors issue specially crafted requests to the target service to exploit memory corruption or logic flaws.","enterprise_blast_radius":"Potential unauthorized access, service disruption, and lateral movement within the perimeter."},"references":[{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-116606","type":"cisa","title":"CISA KEV Catalog Reference"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116606","type":"advisory","title":"NVD Official Detail"}],"published_at":"2026-11-10","updated_at":"2026-11-13"}}