CVE-2026-83861

HighCVSS 7.8/10Last modified Oct 21, 2026

Description

Heap-based buffer overflow in Windows Remote Desktop Protocol allows an authorized attacker to elevate privileges locally.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Oct 13, 2026
Last modified
Oct 21, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-838628.8Use after free in Windows Network Load Balancing allows an unauthorized attacker to execute code over an adjacent network.CVE-2026-838637.8Heap-based buffer overflow in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.CVE-2026-838645.5Improper access control in Windows NTFS allows an authorized attacker to disclose information locally.CVE-2026-838654.7Relative path traversal in Windows Internet (wininet.dll) allows an authorized attacker to perform tampering locally.CVE-2026-838667.0Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.CVE-2026-838677.8Heap-based buffer overflow in Windows Push Notifications allows an authorized attacker to elevate privileges locally.CVE-2026-838687.0Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Bluetooth Driver allows an authorizCVE-2026-838699.8Integer underflow (wrap or wraparound) in DNS Server allows an unauthorized attacker to execute code over a network.CVE-2026-83872.4A vulnerability in allegroai/clearml versions up to and including 1.16.5 allows for relative path traversal when extracting `.zip` archives CVE-2026-838705.5Out-of-bounds read in Windows Aggregated Data Platform Service allows an authorized attacker to disclose information locally.CVE-2026-838717.0Heap-based buffer overflow in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.CVE-2026-838727.8Incorrect conversion between numeric types in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
CVE-2026-83861: High severity, CVSS 7.8 | Vulnix