CVE-2025-9491 medium Description Microsoft Windows LNK File UI Misrepresentation Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Windows. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of .LNK files. Crafted data in an .LNK file can cause hazardous content in the file to be invisible to a user who inspects the file via the Windows-provided user interface. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-25373. References https://www.zerodayinitiative.com/advisories/ZDI-25-148/ https://www.bleepingcomputer.com/news/microsoft/microsoft-new-windows-lnk-spoofing-issues-arent-vulnerabilities/ https://www.theregister.com/2025/12/04/microsoft_lnk_bug_fix/ https://www.securityweek.com/microsoft-silently-mitigated-exploited-lnk-vulnerability/ https://www.bleepingcomputer.com/news/microsoft/microsoft-mitigates-windows-lnk-flaw-exploited-as-zero-day/ https://thehackernews.com/2025/12/microsoft-silently-patches-windows-lnk.html https://www.databreachtoday.com/unpatched-windows-flaw-boon-for-nation-state-hackers-a-29941 https://www.securityweek.com/chinese-apt-exploits-unpatched-windows-flaw-in-recent-attacks/ https://www.helpnetsecurity.com/2025/10/31/zdi-can-25373-cve-2025-9491-exploited-again/ https://www.bleepingcomputer.com/news/security/chinese-hackers-exploit-windows-zero-day-to-spy-on-european-diplomats/ https://thehackernews.com/2025/10/china-linked-hackers-exploit-windows.html https://arstechnica.com/security/2025/10/two-windows-vulnerabilities-one-a-0-day-are-under-active-exploitation/ https://www.theregister.com/2025/10/30/suspected_chinese_snoops_abuse_unpatched/ https://www.virustotal.com/gui/file/a55789d49c395a9b16cb56b0544266d9ecee409fa3c5fead8082f28c2aff4e76 https://msrc.microsoft.com/update-guide/advisory/ADV25258226 Details Source: Mitre , NVD Published : 2025-08-26 Updated : 2025-11-05 Risk Information CVSS v2 Base Score : 7.2 Vector : CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C Severity : High CVSS v3 Base Score : 7.8 Vector : CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Severity : High CVSS v4 Base Score : 4.6 Vector : CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N Severity : Medium EPSS EPSS : 0.00286 Vulnerability Watch Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog . Vulnerability of Interest