BMC root account active without password on BullSequana XH3406 and XH3515 (CVE-2025-15679) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2025-15679

BMC root account active without password on BullSequana XH3406 and XH3515

Answer in brief

CVE-2025-15679 records a Unknown severity vulnerability in BMC root account active without password on BullSequana XH3406 and XH3515. The current sources do not mark it as known exploited. The current feed maps Bull/BullSequana XH3406 (generic), Bull/BullSequana XH3515 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 11, 2026Updated Sep 11, 2026Source checked Sep 11, 2026First seen by HOL Sep 11, 2026Material review Sep 11, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Bull/BullSequana XH3406 (generic), Bull/BullSequana XH3515 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Bull/BullSequana XH3406generic	>=0 <TS 04.05	TS 04.05
Bull/BullSequana XH3515generic	>=0 <TS 43.01	TS 43.01

Recommended response

Check inventory. Check lockfiles and deployed manifests for Bull/BullSequana XH3406, Bull/BullSequana XH3515.
Review the reported fix. Update Bull/BullSequana XH3406 to TS 04.05; Bull/BullSequana XH3515 to TS 43.01 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 11, 2026

Sources and claim methodology

Upstream source description

Under certain circumstances such as reset to factory default operation, the BMC root account is made active without a password on BullSequana XH3406 and XH3515.

Quoted source text, attributed separately from HOL analysis.