{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/bigfix/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["BigFix"],"_cs_severities":["high"],"_cs_tags":["vulnerability","xss","data manipulation","bigfix"],"_cs_type":"threat","_cs_vendors":["HCL"],"content_html":"\u003cp\u003eA vulnerability in HCL BigFix allows a remote, anonymous attacker to manipulate data and conduct cross-site scripting (XSS) attacks. This can lead to unauthorized access, data breaches, or disruption of services. The vulnerability exists within the BigFix platform. Successful exploitation could result in the attacker executing arbitrary code in the context of a user\u0026rsquo;s browser or modifying sensitive data stored within the BigFix environment. This poses a significant risk to organizations relying on BigFix for endpoint management and security. Defenders should prioritize identifying and mitigating this vulnerability to prevent potential exploitation.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a vulnerable HCL BigFix instance.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious request targeting the vulnerable endpoint.\u003c/li\u003e\n\u003cli\u003eThe attacker injects malicious code into a field susceptible to data manipulation.\u003c/li\u003e\n\u003cli\u003eThe attacker injects a malicious script into a field susceptible to XSS.\u003c/li\u003e\n\u003cli\u003eThe BigFix application processes the malicious request without proper sanitization.\u003c/li\u003e\n\u003cli\u003eThe manipulated data is stored or displayed within the BigFix application.\u003c/li\u003e\n\u003cli\u003eThe XSS payload is executed in the context of a user\u0026rsquo;s browser when they access the affected page.\u003c/li\u003e\n\u003cli\u003eThe attacker gains unauthorized access or control through the XSS payload.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability can have significant consequences. An attacker could manipulate critical data within the BigFix environment, leading to data breaches or incorrect configurations. The cross-site scripting component allows the attacker to execute arbitrary code in the context of a user\u0026rsquo;s browser, potentially stealing credentials or performing actions on behalf of the user. The number of victims and sectors targeted are currently unknown, but any organization using HCL BigFix is potentially at risk.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInvestigate and apply the security patches released by HCL for the BigFix platform to remediate the vulnerability.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rules provided below to your SIEM to detect potential exploitation attempts.\u003c/li\u003e\n\u003cli\u003eImplement input validation and output encoding to prevent data manipulation and cross-site scripting attacks in HCL BigFix.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious requests targeting HCL BigFix endpoints, as indicated in the Sigma rules.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-15T11:28:38Z","date_published":"2026-05-15T11:28:38Z","id":"https://feed.craftedsignal.io/briefs/2026-05-hcl-bigfix-vuln/","summary":"A remote, anonymous attacker can exploit a vulnerability in HCL BigFix to manipulate data and conduct a cross-site scripting attack.","title":"HCL BigFix Vulnerability Allows Data Manipulation and Cross-Site Scripting","url":"https://feed.craftedsignal.io/briefs/2026-05-hcl-bigfix-vuln/"}],"language":"en","title":"CraftedSignal Threat Feed — Bigfix","version":"https://jsonfeed.org/version/1.1"}