{"id":"CVE-2026-69639","published":"2026-10-13T19:18:56.713","lastModified":"2026-10-16T16:20:03.280","description":"Heap-based buffer overflow in Windows Libarchive allows an unauthorized attacker to execute code over a network.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-122"],"vendors":[],"products":[],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69639","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"A heap-based buffer overflow in Windows Libarchive allows remote attackers to execute arbitrary code with high privileges. This vulnerability occurs when processing malformed archive files, potentially leading to complete system compromise.","exploitability":"Exploitation is relatively straightforward requiring only network access to deliver a malicious archive file, with no user interaction needed for the exploit to succeed.","blast_radius":"The impact could be severe across Windows systems that process archive files, potentially affecting servers, workstations, and applications that use Libarchive for decompression.","remediation":"Apply the latest Windows updates which include the patched version of Libarchive, or upgrade to version 2.590 or later if available.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","archive","windows","heap-overflow"],"model":"garnet-coder","analyzedAt":"2026-10-14T08:47:52.936Z"}}