{"id":"CVE-2025-47827","published":"2025-06-05T14:15:32Z","modified":"2026-06-17T09:28:44Z","title":"IGEL OS Use of a Key Past its Expiration Date Vulnerability","vendor":"IGEL","product":"IGEL OS","tier":"core","eol":null,"description":{"text":"In IGEL OS before 11, Secure Boot can be bypassed because the igel-flash-driver module improperly verifies a cryptographic signature. Ultimately, a crafted root filesystem can be mounted from an unverified SquashFS image.","provenance":"source","from":"NVD"},"summary":{"text":"The flaw lies in the igel-flash-driver module of IGEL OS before version 11, where a cryptographic signature is improperly verified, allowing Secure Boot to be bypassed. An attacker with physical access to the device and no authentication or user interaction required can mount a crafted root filesystem from an unverified SquashFS image, which can result in a high impact to availability.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:13:08Z"},"cvss":{"score":4.6,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.04927,"percentile":0.9211,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2025-10-14","dueDate":"2025-11-04","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","notes":"https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-47827 ; https://nvd.nist.gov/vuln/detail/CVE-2025-47827","provenance":"source"},"vulncheckKev":{"dateAdded":"2025-10-14","exploitedFirstSeen":"2025-10-14","ransomware":false,"evidence":[{"url":"https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2025-Oct","date":"2025-10-14"},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47827","date":"2025-10-14"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2025-10-14"},{"url":"https://research.checkpoint.com/2025/20th-october-threat-intelligence-report/","date":"2025-10-20"},{"url":"https://www.loginsoft.com/reports/annually/vulnerability-intelligence-report-2025","date":"2026-01-20"}],"evidenceTotal":5,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 30, 2026","url":"https://otx.alienvault.com/pulse/6ae35d889ea92b4ce19c2680","created":"2026-10-29"},{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"}],"provenance":"machine"},"cwes":[{"id":"CWE-347","name":"Improper Verification of Cryptographic Signature"},{"id":"CWE-324","name":"Use of a Key Past its Expiration Date"}],"references":[{"url":"https://github.com/Zedeldi/CVE-2025-47827","tags":["Exploit","Third Party Advisory"]},{"url":"https://github.com/Zedeldi/igelfs","tags":["Product"]},{"url":"https://github.com/Zedeldi/CVE-2025-47827","tags":["Exploit","Third Party Advisory"]},{"url":"https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-47827","tags":["Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-47827","tags":["US Government Resource"]}],"techniques":[{"id":"T1542","name":"Pre-OS Boot","tactics":["persistence","stealth"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Physical boot-chain tampering bypasses Secure Boot","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"Secure Boot can be bypassed because the igel-flash-driver module improperly verifies a cryptographic signature","start":22,"end":132}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1542.001","name":"System Firmware","tactics":["persistence","stealth"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Malicious system image loaded during boot","mappingType":"primary_impact","evidence":[{"from":"description","quote":"a crafted root filesystem can be mounted from an unverified SquashFS image","start":146,"end":220}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2025-16999","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-16999","exploited":true,"exploitedSince":"2025-10-14","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":1,"skipped":0,"earliest":"2025-05-20","earliestUrl":"https://github.com/Zedeldi/CVE-2025-47827","repos":[{"name":"Zedeldi/CVE-2025-47827","url":"https://github.com/Zedeldi/CVE-2025-47827","stars":4,"created":"2025-05-20"}]},"first":{"date":"2025-05-20","source":"PoC-in-GitHub","url":"https://github.com/Zedeldi/CVE-2025-47827"},"provenance":"source"},"exploitRefs":["https://github.com/Zedeldi/CVE-2025-47827"],"flow":[{"stage":"exploitation","techniques":["T1542"],"provenance":"ai"},{"stage":"primary","techniques":["T1542.001"],"provenance":"ai"}],"timeline":[{"date":"2025-05-20","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub","url":"https://github.com/Zedeldi/CVE-2025-47827","provenance":"source"},{"date":"2025-06-05","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47827","provenance":"source"},{"date":"2025-10-14","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2025-Oct","provenance":"source"},{"date":"2025-10-14","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2025-10-14","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-16999","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":"PoC-in-GitHub","daysToKev":131},"priority":{"score":64.6,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 381 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":18.42,"detail":"percentile 0.9211"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 NVD reference tagged Exploit; 1 PoC-in-GitHub repo"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":3.22,"detail":"base score 4.6"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}