External risk intelligence

BMC Helix Network Management Authentication Bypass via SAML Configuration.

CVE advisorySeverity: CRITICAL (CVSS 9.5)

CVE-2026-111283

The vulnerability affects a network management product that utilizes web-based authentication. Such platforms are commonly deployed as web applications and administrative portals accessible to administrators, often positioned as internet-facing or edge-reachable services to facilitate remote network management.

Authentication Bypass

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A vulnerability in BMC Helix Network Management allows unauthenticated attackers to bypass login controls when SAML single sign-on is configured, potentially enabling them to gain administrator access and alter system configurations and records.

Unauthenticated access to network management.
Bypasses login; could impact control.
Confirm if SAML is in use.

Attack Path

How an attacker could exploit the issue

An unauthenticated attacker can exploit this vulnerability by submitting an administrator username with any password through the web login page. This bypasses authentication when SAML single sign-on is configured, granting the attacker a SuperAdmin session. The attacker can then alter device credentials, execute commands on devices, and change audit records.

Attacker gains access to web login page.
Submits administrator username with any password.
Results in SuperAdmin session, device compromise.

Live Threat

Current exploitation, exposure, and threat context

When SAML single sign-on is configured, an unauthenticated attacker could bypass authentication on BMC Helix Network Management on-prem. This could allow them to log in as the local administrator with any password, modify device credentials, execute device commands, and alter audit records.

System administrator credentials and device access.
An attacker could submit crafted login requests.
Unauthorized system control and data alteration.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in BMC Helix Network Management impacts infrastructure and platform teams responsible for its operation. The initial step is to identify all on-premise instances, confirm their network exposure, and determine business criticality to prioritize remediation efforts. Coordination with the vendor and planning for necessary maintenance windows will be essential.

Infrastructure and platform teams own remediation.
Verify network exposure and business criticality.
Plan remediation with vendor coordination.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

Free EASM Trial See How Signal Works

Frequently asked questions

What is BMC Helix Network Management?

BMC Helix Network Management is a software platform used by IT teams to monitor, manage, and configure complex enterprise network infrastructures. It functions as a centralized control center, allowing administrators to automate tasks, track device health, and ensure network performance. Because it handles sensitive administrative functions, it requires secure authentication to protect the underlying hardware and operational data it controls.

How does CVE-2026-111283 create an authentication bypass?

This vulnerability involves a weakness classified as CWE-305, which concerns authentication bypass issues. Specifically, the flaw exists within the system's logic for handling SAML single sign-on configurations. When this feature is active, the application fails to properly validate credentials, allowing an attacker to submit an administrator's username alongside any password to gain full SuperAdmin access without verifying their identity.

Do I need SAML enabled for this bug to be triggered?

Yes. This specific authentication bypass is tied to the SAML single sign-on configuration. If your instance of BMC Helix Network Management is not currently configured to use SAML, this particular bypass mechanism is not applicable. The vulnerability is triggered by sending a malformed login request through the web interface while the system is in the susceptible configuration state.

How does Halo Surface Signal assess this risk?

Halo Surface Signal assigns a high risk level because this software is a central management platform. These portals are frequently deployed as web applications intended for remote administration, meaning they are often positioned to be reachable over the network or via the internet. Because the vulnerability allows unauthorized access to critical administrative controls, its potential for impact on your internal network is significant.

What should I do if I run this software?

First, verify whether you are running a version prior to 26.3.01 and confirm if SAML single sign-on is enabled in your environment. Prioritize identifying these instances and assessing their network connectivity. Coordinate with your infrastructure and platform teams to plan for the vendor-supplied update, ensuring you schedule maintenance windows to apply the patch and secure your administrative sessions.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.