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Authentication bypass in BMC Helix Network Management with SAML

Priority MEDIUM 44CWE-305Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

BMC Helix Network Management on-prem from 26.3.00 before 26.3.01 contains an authentication bypass flaw (CWE-305) when SAML single sign-on is configured. An unauthenticated remote attacker can log in as the local administrator with any password on the web login page. The resulting SuperAdmin session lets the attacker modify device credentials, run device commands and alter audit records.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

BMC Helix Network Management on-prem 26.3.00 before 26.3.01 contains an authentication bypass vulnerability that allows unauthenticated attackers to log in as the local administrator with any password when SAML single sign-on is configured. Attackers can submit the administrator username with an arbitrary password on the web login page to obtain a SuperAdmin session, modify device credentials, run device commands, and alter audit records.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00766 55th percentileScored 2026-11-07
Fix Fixed BMC Helix Network Management (BMC Helix): 26.3.01

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
BMC HelixBMC Helix Network Management26.3.00 to before 26.3.0126.3.01Patch availableCNA
  • BMC Helix Network Management VendorBMC Helix Affected 26.3.00 to before 26.3.01 Fixed in 26.3.01 Patch available CNA

Remediation

Upgrade BMC Helix Network Management to 26.3.01, the listed fixed version.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA BMC Helix Network Management (BMC Helix) Fixed in 26.3.01

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-111283
  2. 2026-10-16 CISA SSVC decision points changed
  3. 2026-10-18 1 new reference · CNA
  4. 2026-10-18 Alias added: GHSA-w2gx-x7ww-hgvm
  5. 2026-10-20 Title updated · CNA
  6. 2026-10-20 Affected versions changed · CNA
  7. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Sources