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CVE-2025-15679

BMC root account active without password on BullSequana XH3406 and XH3515

HIGH
7.3
CVSS Score
Published: September 11, 2026 at 08:02 AM UTC
Updated: October 14, 2026 at 07:10 PM UTC
2 products affected across 1 vendorBullSequana XH3515BullSequana XH3406

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Severity
HIGH7.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

BullSequana XH3406· Bull
90%
0 ≤ v < TS 04.050
Affected range stops below TS 04.05, so it looks safe — our inference, not a vendor statement
BullSequana XH3515· Bull
90%
0 ≤ v < TS 43.010
Affected range stops below TS 43.01, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Source: cverecord
https://myatos.my.site.com/psmcustomer/s/contentdocument/069ci00000eJrEVAA0
Vendor Advisory
Source: cverecord
https://myatos.my.site.com/psmcustomer/s/contentdocument/069ci00000eNzLYAA0

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGHBull
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-258

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