CVE-2026-83665
HighCVSS 7.5Summary
Null pointer dereference in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
Risk Assessment
The attack can crash the DHCP server, preventing clients from obtaining IP addresses and disrupting network operations.
Recommendation
Install the latest Windows security updates to remediate this vulnerability.
Other vulnerabilities in Windows DHCP Server
See all- CVE-2026-88171High
Double free in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-88120High
Use after free in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-88119High
Use after free in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-88117High
Use after free in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-83691High
Heap-based buffer overflow in Windows DHCP Server allows an authorized attacker to elevate privileges locally.
- CVE-2026-70069High
Stack-based buffer overflow in Windows DHCP Server allows an authorized attacker to execute code over a network.
- CVE-2026-70066High
Use after free in Windows DHCP Server allows an authorized attacker to elevate privileges locally.
- CVE-2026-70058High
Out-of-bounds write in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-69830High
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-96934Critical
Windows DHCP Server is affected by a use after free vulnerability. This allows an unauthorized attacker to execute code over a network.
Original NVD description (English source)
Null pointer dereference in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS