{"id":"CVE-2026-97781","published":"2026-10-13T19:22:16.197","lastModified":"2026-10-16T15:17:38.370","description":"Improper neutralization of special elements used in a command ('command injection') in Microsoft Office OneNote allows an unauthorized attacker to execute code over a network.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwes":["CWE-77"],"vendors":["microsoft"],"products":["365 apps"],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97781","tags":["Vendor Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"Microsoft Office OneNote is vulnerable to command injection when processing specially crafted input, allowing remote attackers to execute arbitrary code on affected systems. This represents a significant security risk as OneNote is widely used across Microsoft 365 environments.","exploitability":"Exploitation requires a remote attacker to convince a user to open a malicious OneNote file or document, making it moderately difficult but achievable through social engineering or phishing campaigns.","blast_radius":"If exploited, this vulnerability could allow attackers to execute arbitrary code on user workstations with the privileges of the logged-in user, potentially leading to full system compromise or lateral movement within the organization.","remediation":"Deploy Microsoft's security update KB5042378 immediately, which addresses this command injection vulnerability in OneNote.","detection":"Monitor for unusual process execution patterns involving 'onenote.exe' with command-line arguments that contain special shell characters or external command invocations, particularly when these processes are initiated by user accounts during normal office hours.","tags":["rce","command-injection","microsoft","office"],"model":"garnet-coder","analyzedAt":"2026-10-18T10:22:58.056Z"}}