{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/web-service/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":9.8,"id":"CVE-2026-39920"}],"_cs_exploited":false,"_cs_products":["FileStore","Axis2"],"_cs_severities":["critical"],"_cs_tags":["rce","cve-2026-39920","apache axis2","default credentials","web service"],"_cs_type":"advisory","_cs_vendors":["BridgeHead Software","Apache"],"content_html":"\u003cp\u003eBridgeHead FileStore versions prior to 24A, released in early 2024, expose a critical security vulnerability. Specifically, the Apache Axis2 administration module is accessible on network endpoints with default credentials. This flaw allows unauthenticated remote attackers to execute arbitrary operating system commands. The vulnerability stems from insecure default configurations within the FileStore application and the underlying Axis2 web service framework. Successful exploitation grants complete control over the affected system, potentially leading to data breaches, system compromise, and further lateral movement within the network. This vulnerability poses a significant risk to organizations using vulnerable versions of BridgeHead FileStore.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a BridgeHead FileStore instance running a vulnerable version of the software on a network-accessible endpoint.\u003c/li\u003e\n\u003cli\u003eThe attacker accesses the Apache Axis2 administration console, which is exposed due to a misconfiguration.\u003c/li\u003e\n\u003cli\u003eThe attacker authenticates to the Axis2 admin console using default credentials, bypassing authentication controls.\u003c/li\u003e\n\u003cli\u003eThe attacker uploads a malicious Java archive (WAR file) containing a web service designed to execute arbitrary commands.\u003c/li\u003e\n\u003cli\u003eThe attacker deploys the malicious web service through the Axis2 administration interface.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a SOAP request to the deployed malicious web service, embedding the operating system command to be executed.\u003c/li\u003e\n\u003cli\u003eThe vulnerable FileStore instance processes the SOAP request, executing the attacker-controlled command on the host operating system.\u003c/li\u003e\n\u003cli\u003eThe attacker gains remote code execution, achieving complete control over the compromised system.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-39920 allows unauthenticated attackers to execute arbitrary OS commands on systems running vulnerable versions of BridgeHead FileStore. This can lead to complete system compromise, data breaches, denial of service, and further lateral movement within the network. While the exact number of affected organizations is unknown, the widespread use of BridgeHead FileStore in data protection and archiving scenarios makes this a critical vulnerability. The consequences of a successful attack could include the loss of sensitive data, disruption of business operations, and significant financial losses.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the update to FileStore version 24A or later to remediate the vulnerability as mentioned in the product updates page (\u003ca href=\"https://www.bridgeheadsoftware.com/rapid-data-protection-product-updates/\"\u003ehttps://www.bridgeheadsoftware.com/rapid-data-protection-product-updates/\u003c/a\u003e).\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious POST requests to the Axis2 administration console (\u003ccode\u003e/axis2/servlet/AdminServlet\u003c/code\u003e) as it is a key component of the exploitation. Use the \u0026ldquo;Detect Axis2 Admin Access\u0026rdquo; Sigma rule to identify unauthorized access attempts.\u003c/li\u003e\n\u003cli\u003eImplement network segmentation to limit the exposure of BridgeHead FileStore instances and the Axis2 administration module.\u003c/li\u003e\n\u003cli\u003eReview and enforce strong authentication policies for all web-based administration interfaces.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-24T16:16:36Z","date_published":"2026-04-24T16:16:36Z","id":"/briefs/2026-04-bridgehead-filestore-rce/","summary":"BridgeHead FileStore versions prior to 24A are vulnerable to unauthenticated remote code execution via exposed Apache Axis2 administration module with default credentials, enabling attackers to upload malicious web services and execute arbitrary OS commands.","title":"BridgeHead FileStore Unauthenticated Remote Code Execution via Apache Axis2","url":"https://feed.craftedsignal.io/briefs/2026-04-bridgehead-filestore-rce/"}],"language":"en","title":"CraftedSignal Threat Feed — Web Service","version":"https://jsonfeed.org/version/1.1"}