Is CVE-2026-115484 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-115484 being exploited in the wild.

How severe is CVE-2026-115484?

High severity, with a CVSS score of 7.6, published 23 October 2026.

Is there a fix for CVE-2026-115484?

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.

How is CVE-2026-115484 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-115484?

Check whether you run Open-Iscsi. 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.

CVE-2026-115484: open-iscsi iscsiuio DHCPv4 option buffer overflow

CVE-2026-115484 · Severity: high · CVSS 7.6 · Published 2026-10-23

open-iscsi is a network utility that manages iSCSI connections, allowing systems to connect to storage servers over a network. A flaw in the DHCPv4 option parser causes it to read beyond its allocated memory buffer when processing a crafted DHCP response, allowing an attacker on the same network to crash the daemon or corrupt network configuration.

Vendors: Open-Iscsi.

Quick answers

Is CVE-2026-115484 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-115484 being exploited in the wild.
How severe is CVE-2026-115484?: High severity, with a CVSS score of 7.6, published 23 October 2026.
Which products and versions are affected?: open-iscsi open-iscsi.
Is there a fix for CVE-2026-115484?: 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.
How is CVE-2026-115484 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-115484?: Check whether you run Open-Iscsi. 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.

Technical details

The iscsiuio component incorrectly calculates the length of DHCPv4 option data, leading to an out-of-bounds heap read. An attacker on the same network segment can send a specially crafted DHCP response to trigger the vulnerability, resulting in daemon crash or memory corruption. This is a classic buffer over-read vulnerability in network protocol parsing.

Affected products

open-iscsi open-iscsi

Timeline

2026-10-23: disclosed

References

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