CVE-2026-18728 — Open-iscsi: open-iscsi: integer underflow in iscsiuio ipv4 dhcp parsing
A flaw was found in open-iscsi. An integer underflow vulnerability in the `iscsiuio` component, specifically during IPv4 Dynamic Host Configuration Protocol (DHCP) parsing, allo…
Published: 2026-08-13 · CVSS: 6.5 · CVSS 3.1
A flaw was found in open-iscsi. An integer underflow vulnerability in the `iscsiuio` component, specifically during IPv4 Dynamic Host Configuration Protocol (DHCP) parsing, allows a remote attacker on the same local network segment to cause a denial of service. By sending a specially crafted IPv4/UDP DHCP reply, the attacker can trigger an out-of-bounds read, leading to the `iscsiuio` process crashing. This issue affects systems where `iscsiuio` is actively handling IPv4 DHCP traffic.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7