[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fmTJ1ePIM8LFQdoPoulc8RgC43HkdjVyfWHffJLn5JTo":3},{"article":4,"iocs":37,"watch_terms":49,"solutions":50,"lesson":147},{"id":5,"title":6,"slug":7,"summary":8,"ai_summary":9,"brief":10,"url":11,"image_url":12,"published_at":13,"ingested_at":14,"relevance_score":15,"entities":16,"category_id":17,"category":18,"article_tags":21},"c8a8ba48-eb2e-4dd9-bd42-b177d8989fb4","Critical F5 BIG-IP Flaw Upgraded to 9.8 RCE, Exploited in the Wild","critical-f5-big-ip-flaw-upgraded-to-9-8-rce-exploited-in-the-wild","F5 BIG-IP APM flaw CVE-2025-53521 escalates to critical 9.8 RCE, actively exploited. Patch now, check IoCs, and secure vulnerable systems immediately.","F5 BIG-IP APM vulnerability CVE-2025-53521 was reclassified from a minor denial-of-service flaw to a critical 9.8 remote code execution vulnerability affecting versions 15.x, 16.x, and 17.x. The vulnerability, a memory-handling error in the apmd process, is actively being exploited in the wild, with attackers using it to gain complete control of affected systems. F5 released indicators of compromise including malware hash c05d5254 and forensic indicators to help organizations identify compromised systems and recommends immediate patching or system rebuilds.","F5 BIG-IP APM vulnerability CVE-2025-53521 upgraded to critical 9.8 RCE, actively exploited in the wild.","https:\u002F\u002Fhackread.com\u002Fcritical-f5-big-ip-flaw-upgrad-to-9-8-rce-exploited\u002F",null,"2026-03-31T11:36:21+00:00","2026-03-31T12:00:22.39395+00:00",9,[],"574f766a-fb3f-487c-8d2c-0720ae75471b",{"id":17,"icon":12,"name":19,"slug":20},"Zero-day","zero-day",[22,27,32],{"category":23},{"id":24,"icon":12,"name":25,"slug":26},"80544778-fabb-4dcd-aa35-17492e5dcf4f","Vulnerabilities","vulnerabilities",{"category":28},{"id":29,"icon":12,"name":30,"slug":31},"c5eccf7c-abbc-4bd3-bbed-e6da5cba8e73","Incident Response","incident-response",{"category":33},{"id":34,"icon":12,"name":35,"slug":36},"e7b231c8-5f79-4465-8d38-1ef13aea5a14","Threat Intelligence","threat-intelligence",[38,42,46],{"type":39,"value":40,"context":41},"cve","CVE-2025-53521","Critical RCE vulnerability in F5 BIG-IP APM, actively exploited in the wild",{"type":43,"value":44,"context":45},"mitre_attack","T1190","Exploit public-facing application vulnerability (RCE via BIG-IP APM flaw)",{"type":43,"value":47,"context":48},"T1078","Valid accounts abuse (f5hubblelcdadmin local user disabling security protections)",[],{"controls":51,"vendors":139},[52,81,110],{"slug":53,"name":54,"problem":55,"products":56},"vulnerability-management","Vulnerability scanning and prioritisation","You know which systems are vulnerable, and which ones to fix first.",[57,65,73],{"vendor_slug":58,"vendor_name":59,"vendor_logo":60,"product_slug":61,"product_name":62,"url":63,"description":64},"holm-security","Holm Security","\u002Fvendor-logos\u002Fholm-security.png","holm-security-platform","Holm Security Platform","https:\u002F\u002Fwww.holmsecurity.com\u002F","Vulnerability scanning of systems, web applications, cloud and the external attack surface, plus phishing simulation.",{"vendor_slug":66,"vendor_name":67,"vendor_logo":68,"product_slug":69,"product_name":70,"url":71,"description":72},"rapid7","Rapid7","\u002Fvendor-logos\u002Frapid7.png","insightvm","Rapid7 Exposure Command (InsightVM)","https:\u002F\u002Fwww.rapid7.com\u002Fproducts\u002Finsightvm\u002F","Vulnerability scanning and risk-based prioritisation; InsightVM is now part of Exposure Command, alongside attack surface and cloud risk.",{"vendor_slug":74,"vendor_name":75,"vendor_logo":76,"product_slug":77,"product_name":78,"url":79,"description":80},"tenable","Tenable","\u002Fvendor-logos\u002Ftenable.png","tenable-vulnerability-management","Tenable Vulnerability Management","https:\u002F\u002Fwww.tenable.com\u002Fproducts\u002Fvulnerability-management","Cloud-based vulnerability scanning and prioritisation, built on Nessus.",{"slug":82,"name":83,"problem":84,"products":85},"patch-management","Automated patch management","Known holes get closed in days, not months.",[86,94,102],{"vendor_slug":87,"vendor_name":88,"vendor_logo":89,"product_slug":90,"product_name":91,"url":92,"description":93},"action1","Action1","\u002Fvendor-logos\u002Faction1.png","action1-patch-management","Action1 Patch Management","https:\u002F\u002Fwww.action1.com\u002F","Cloud-native patch management for Windows, macOS and third-party applications.",{"vendor_slug":95,"vendor_name":96,"vendor_logo":97,"product_slug":98,"product_name":99,"url":100,"description":101},"ivanti","Ivanti","\u002Fvendor-logos\u002Fivanti.png","neurons-patch-management","Ivanti Neurons for Patch Management","https:\u002F\u002Fwww.ivanti.com\u002Fproducts\u002Fivanti-neurons-for-patch-management","Risk-based patch management for operating systems and third-party applications.",{"vendor_slug":103,"vendor_name":104,"vendor_logo":105,"product_slug":106,"product_name":107,"url":108,"description":109},"microsoft","Microsoft","\u002Fvendor-logos\u002Fmicrosoft.png","intune","Microsoft Intune","https:\u002F\u002Fwww.microsoft.com\u002Fen-us\u002Fsecurity\u002Fbusiness\u002Fmicrosoft-intune","Device management for Windows, macOS, iOS and Android, including update rings and compliance policies.",{"slug":111,"name":112,"problem":113,"products":114},"endpoint-detection-response","Endpoint detection and response (EDR and XDR)","Malware and hands-on-keyboard attackers on laptops and servers get spotted and stopped.",[115,123,131],{"vendor_slug":116,"vendor_name":117,"vendor_logo":118,"product_slug":119,"product_name":120,"url":121,"description":122},"sophos","Sophos","\u002Fvendor-logos\u002Fsophos.png","sophos-endpoint","Sophos Endpoint","https:\u002F\u002Fwww.sophos.com\u002Fen-us\u002Fproducts\u002Fendpoint-security","Endpoint protection with Intercept X anti-ransomware technology and EDR.",{"vendor_slug":124,"vendor_name":125,"vendor_logo":126,"product_slug":127,"product_name":128,"url":129,"description":130},"sentinelone","SentinelOne","\u002Fvendor-logos\u002Fsentinelone.png","singularity-endpoint","Singularity Endpoint","https:\u002F\u002Fwww.sentinelone.com\u002Fplatform\u002Fendpoint-security\u002F","Endpoint protection and detection with automated response and rollback.",{"vendor_slug":132,"vendor_name":133,"vendor_logo":134,"product_slug":135,"product_name":136,"url":137,"description":138},"withsecure","WithSecure","\u002Fvendor-logos\u002Fwithsecure.png","elements-xdr","WithSecure Elements XDR","https:\u002F\u002Fwww.withsecure.com\u002Fen\u002Ffor-business\u002Fplatform\u002Fxdr\u002F","Endpoint detection and response with extended detection, on the Elements cloud platform.",[140],{"slug":141,"name":142,"logo_path":143,"roles":144},"f5","F5","\u002Fvendor-logos\u002Ff5.png",[145,146],"affected","reported_by",{"slug":148,"title":149,"body":150,"framework_refs":151,"framework_notes":157},"critical-f5-big-ip-rce-vulnerability-actively-exploited","Critical F5 BIG-IP RCE Vulnerability Actively Exploited","A memory-handling vulnerability in F5 BIG-IP APM was severely underestimated, being initially classified as a minor DoS issue before being upgraded to a critical 9.8 RCE flaw. This miscategorization allowed the vulnerability to remain unpatched while attackers discovered and began actively exploiting it to gain complete system control. The incident demonstrates how improper vulnerability assessment can leave critical infrastructure exposed, especially when combined with delayed patching of internet-facing network appliances. Organizations with affected F5 systems now face potential complete compromise and may need to rebuild systems entirely.",[152,153,154,155,156],"CIS Control 7.1","CIS Control 12.2","NIST SI-2","NIST RA-5","NIST CM-8",{}]