CVE WatchAug 13, 2026

CVE-2026-18728

A flaw was found in open-iscsi. An integer underflow vulnerability in the `iscsiuio` component, specifically during IPv4 Dynamic Host Config

CVSS

6.5

Medium

EPSS

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KEV

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Exploit Today

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0-100

Published: Aug 13, 2026 · Last modified: Aug 13, 2026 · CWE-191

EPSS · 30d

Not enough EPSS history yet.

Technical description

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.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-187276.5 MED

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——0Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally.1d