CVE-2026-18726

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-18726	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2462331	Issue Tracking

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:10.0:::::::*

History

No history.

Information

Published : 2026-08-12 22:17

Updated : 2026-08-25 16:54

NVD link : CVE-2026-18726

Mitre link : CVE-2026-18726

CVE.ORG link : CVE-2026-18726

JSON object : View

Products Affected

redhat

enterprise_linux

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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