CVE-2026-18728: A flaw was found in open-iscsi. An integer underflow vulnerability in the `iscsiuio` component, specifically during…
CVE-2026-18728 · Severity: medium · CVSS 6.5 · Published 2026-08-13
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.
No. Junglewise Threat Intelligence has no report of CVE-2026-18728 being exploited in the wild.
How severe is CVE-2026-18728?
Medium severity, with a CVSS score of 6.5, published 13 August 2026.
Which products and versions are affected?
Redhat Enterprise Linux. The advisory does not name versions.
Is there a fix for CVE-2026-18728?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-18728?
Check whether you run Redhat Enterprise Linux. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.