{"id":9211,"date":"2025-12-15T10:04:36","date_gmt":"2025-12-15T10:04:36","guid":{"rendered":"https:\/\/serisec.com\/index.php\/2025\/12\/15\/cisa-warns-of-windows-cloud-files-mini-filter-0-day-vulnerability-exploited-in-attacks\/"},"modified":"2025-12-15T10:04:36","modified_gmt":"2025-12-15T10:04:36","slug":"cisa-warns-of-windows-cloud-files-mini-filter-0-day-vulnerability-exploited-in-attacks","status":"publish","type":"post","link":"https:\/\/serisec.com\/index.php\/2025\/12\/15\/cisa-warns-of-windows-cloud-files-mini-filter-0-day-vulnerability-exploited-in-attacks\/","title":{"rendered":"CISA Warns of Windows Cloud Files Mini Filter 0-Day Vulnerability Exploited in Attacks"},"content":{"rendered":"

CISA Warns of Windows Cloud Files Mini Filter 0-Day Vulnerability Exploited in Attacks
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A critical alert regarding an active zero-day vulnerability affecting the Microsoft Windows Cloud Files Mini Filter<\/a> <\/a>Driver.<\/p>\n

The vulnerability poses a significant risk to organizations running affected Windows systems and requires immediate remediation efforts.<\/p>\n

CISA reports that the vulnerability, tracked as CVE-2025-62221, is a use-after-free<\/a> flaw in the Windows Cloud Files Mini Filter Driver.<\/p>\n

That allows authorized attackers to elevate their local privileges on compromised systems.<\/p>\n

CISA Notes on Active Exploitation Flaw<\/strong><\/h2>\n

CISA states that this type of vulnerability is particularly dangerous because it enables attackers who have gained initial access to escalate their privileges.<\/p>\n

Achieve system-level control, potentially leading to complete system compromise.<\/p>\n

\n\n\n\n\n\n
CVE ID<\/th>\nVulnerability Type<\/th>\nAffected Component<\/strong><\/th>\nAttack Vector<\/strong><\/th>\nCWE Reference<\/th>\n<\/tr>\n<\/thead>\n
CVE-2025-62221<\/a><\/td>\nUse After Free<\/td>\nWindows Cloud Files Mini Filter Driver<\/td>\nLocal Privilege Escalation<\/td>\nCWE-416<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

The use-after-free vulnerability class is a memory safety issue in which software attempts to access memory that has already been released.<\/p>\n

Allowing attackers to execute arbitrary code with elevated privileges. Organizations must take immediate action to protect their infrastructure.<\/p>\n

CISA recommends applying all available Microsoft mitigations as soon as possible. For agencies operating cloud services, strict adherence to BOD 22-01<\/a> guidance is mandatory.<\/p>\n

Organizations unable to implement patches should discontinue use of affected systems until remediation is available.<\/p>\n

Added this vulnerability to the CISA catalog<\/a> on December 9, 2025, with a mandatory remediation deadline of December 30, 2025.<\/p>\n

This compressed timeline reflects the severity and active exploitation of this flaw in the wild. This vulnerability affects organizations across all sectors relying on\u00a0Windows<\/a><\/span> systems.<\/p>\n

The elevation of privileged capability makes this particularly concerning for enterprises where attackers could leverage initial compromise into a complete infrastructure takeover.<\/p>\n

CISA urges Organizations to prioritize Windows system inventory and patch deployment. IT teams must monitor Microsoft security <\/a>advisories for comprehensive guidance on patches.<\/p>\n

Implement updates as soon as testing confirms compatibility with critical systems.<\/p>\n

Network defenders should enhance monitoring for unusual privilege escalation attempts and suspicious process behavior on Windows systems.<\/p>\n

Follow us on Google News<\/a>, LinkedIn<\/a>, and X<\/a> for daily cybersecurity updates. Contact us<\/a> to feature your stories.<\/strong><\/p>\n

The post CISA Warns of Windows Cloud Files Mini Filter 0-Day Vulnerability Exploited in Attacks<\/a> appeared first on Cyber Security News<\/a>.<\/p>\n<\/div>\n

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CISA Warns of Windows Cloud Files Mini Filter 0-Day Vulnerability Exploited in Attacks A critical alert regarding an active zero-day vulnerability affecting the Microsoft Windows Cloud Files Mini Filter Driver. The vulnerability poses a significant risk to organizations running affected Windows systems and requires immediate remediation efforts. CISA reports that the vulnerability, tracked as CVE-2025-62221, […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[531,129,63,2169,131,395,517],"tags":[130],"class_list":["post-9211","post","type-post","status-publish","format-standard","hentry","category-cloud","category-cyber-security","category-cyber-security-news","category-exploit","category-vulnerability","category-windows","category-zero-day","tag-cyber-security-news"],"_links":{"self":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/9211"}],"collection":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/comments?post=9211"}],"version-history":[{"count":0,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/9211\/revisions"}],"wp:attachment":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/media?parent=9211"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/categories?post=9211"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/tags?post=9211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}