CVE-2026-18103
4.9 MEDIUMPublished 2026-08-05 · Updated 2026-08-06
AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.
NVD 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-120
References
Data: NVD (public domain). Analysis: local $0 model. Defensive use only.