Russian Attackers Weaponize WinRAR Flaw Against Ukrainian Orgs
Two separate campaigns target CVE-2025-8088, fixed last July, to conduct data theft and cyberespionage against military and government targets in Ukraine.
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Fixed is a status indicating that a security issue has been addressed through a corrective change, such as a software patch, code change, configuration update, or removal of an affected component. In vulnerability tracking, it usually describes the issue under specified conditions and versions; it does not automatically prove that every affected asset has been updated or that exploitation is impossible.
For vulnerability management, practitioners should verify the fix’s scope, deployment, and effectiveness through testing, rescanning, or other evidence. Incomplete rollout, an overlooked instance, a dependent vulnerable component, or a regression can leave exposure despite a “Fixed” label. Records should distinguish fixed from mitigated or accepted, identify affected assets and versions, and retain validation dates. If the issue was exploited before remediation, fixing it does not establish that an attacker’s access or changes have been removed; that requires separate investigation.
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Two separate campaigns target CVE-2025-8088, fixed last July, to conduct data theft and cyberespionage against military and government targets in Ukraine.
Microsoft initially fixed CVE-2025-59287 in the WSUS update mechanism in the October 2025 Patch Tuesday release, but the company has now issued a second, out-of-band update for the flaw, which is under attack in the wild.