VULNERABILITY INTELLIGENCE

CVE-2026-18726

CVSS score6.5 MEDIUM
EPSS probability0.31%
CISA KEVNot currently listed
Published2026-08-12
Last modified2026-08-25
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • secalert@redhat.com: CWE-835

Primary references