Vulnerability record · CVE-2026-18728 · published 13 August 2026

CVE-2026-18728: Redhat enterprise linux vulnerability

Redhat · Enterprise Linux

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.

6.5 CVSS 3.1 Medium EPSS 0.19% · top 92.3% CWE-191 · CWE-191

6.5CVSS 3.1 base score

0.19%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

2References

25 Aug 2026Last modified by NVD

Description

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Enterprise Linux Redhat

References

Link	Tags
https://access.redhat.com/security/cve/CVE-2026-18728	Vendor AdvisoryMitigation
https://bugzilla.redhat.com/show_bug.cgi?id=2463029	Issue TrackingVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-18728), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.