Vulnerability record · CVE-2026-18726 · published 12 August 2026

CVE-2026-18726: Redhat enterprise linux vulnerability

Redhat · Enterprise Linux

A flaw was found in open-iscsi. This vulnerability allows a remote attacker on the same local network segment to cause a Denial of Service (DoS) in the iscsiuio daemon. By sending a specially crafted Internet Control Message Protocol version 6 (ICMPv6) Router Advertisement with a zero-length option, the attacker can trigger an infinite loop. This leads to sustained CPU usage, rendering the daemon unresponsive and impacting system availability. A secondary risk of out-of-bounds reads exists with a short IPv6 payload, though no memory corruption or data exposure has been confirmed.

6.5 CVSS 3.1 Medium EPSS 0.21% · top 90.5% CWE-835 · CWE-835

6.5CVSS 3.1 base score

0.21%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-2026-18726	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2462331	Issue Tracking

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Source: NIST National Vulnerability Database (record CVE-2026-18726), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.