CVE-2026-83678
HighCVSS 7.8Summary
Heap-based buffer overflow in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker could escalate privileges and take control of the system, potentially leading to full security compromise.
Recommendation
Apply the latest Windows security updates to remediate this vulnerability.
Other vulnerabilities in Windows TCP/IP
See all- CVE-2026-96852High
A use after free vulnerability in the Windows TCP/IP stack allows an authorized attacker to elevate privileges locally. The issue stems from accessing freed memory within the TCP/IP protocol handling code.
- CVE-2026-85834High
Heap-based buffer overflow in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
- CVE-2026-85368High
Heap-based buffer overflow in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
- CVE-2026-83872High
Incorrect conversion between numeric types in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
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Double free in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
- CVE-2026-83682High
Use after free in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
- CVE-2026-70164High
Use after free in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
- CVE-2026-69913High
Use after free in Windows TCP/IP allows an unauthorized attacker to execute code over a network.
- CVE-2026-40415High
A use after free vulnerability in Windows TCP/IP allows an unauthorized attacker to execute code over a network.
- CVE-2026-40406High
A use after free vulnerability in Windows TCP/IP allows an unauthorized attacker to disclose information over a network.
Original NVD description (English source)
Heap-based buffer overflow in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS