CVE-2026-18103 - Dhcp-server: dhcp-server: persistent denial of service due to buffer overflow via omapi

CVE-2026-18103 - Dhcp-server: dhcp-server: persistent denial of service due to buffer overflow via omapi

https://cvefeed.io/rssfeed/latest.atom / Wed, 08/05/2026 - 04:09
CVE ID :CVE-2026-18103
Published : Aug. 5, 2026, 12:16 a.m. | 38 minutes ago
Description :A flaw was found in dhcp-server. A remote attacker with network access to the OMAPI (Open Management Application Programming Interface) port, especially if not secured with TSIG (Transaction Signature) key authentication, could send a specially crafted lease creation request. This request, containing an overly long InfiniBand MAC address, triggers a buffer overflow in the `print_hw_addr()` function. Successful exploitation leads to a persistent denial of service (DoS), causing the `dhcpd` service to crash and preventing it from restarting without manual intervention.
Severity: 4.9 | MEDIUM
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