---
title: "CVE-2026-115484: open-iscsi - Denial of Service & Data Tampering"
description: "open-iscsi contains a denial of service caused by incorrect length calculation in DHCPv4 option parser in iscsiuio, letting attackers on the same network segment crash the daemon or corrupt network configuration, exploit requires network access."
url: https://panop.io/threat-heartbeat/CVE-2026-115484/
---

# CVE-2026-115484 open-iscsi - Denial of Service & Data Tampering

open-iscsi contains a denial of service caused by incorrect length calculation in DHCPv4 option parser in iscsiuio, letting attackers on the same network segment crash the daemon or corrupt network configuration, exploit requires network access.

CVSS base score 7.6 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.22% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-115484)

## Details

Type

Denial of Service

Impact

Denial Of Service, Data Tampering

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Published

23 October 2026

Updated

25 October 2026

Weakness

[CWE-125](https://cwe.mitre.org/data/definitions/125.html)

## Vendor fix

Update to the latest version of open-iscsi.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-115484](https://nvd.nist.gov/vuln/detail/CVE-2026-115484)
- [https://access.redhat.com/security/cve/CVE-2026-115484](https://access.redhat.com/security/cve/CVE-2026-115484)
- [https://bugzilla.redhat.com/show\_bug.cgi?id=2556265](https://bugzilla.redhat.com/show_bug.cgi?id=2556265)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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