CVE-2025-15679 PUBLISHED

BMC root account active without password on BullSequana XH3406 and XH3515

Assigner: Bull
Reserved: 04.08.2026 Published: 11.09.2026 Updated: 11.09.2026

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.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:P/S:P/AU:N/R:U/V:C/RE:L/U:Clear
CVSS Score: 7.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	Low
Attack Complexity	Low	Integrity	High	Integrity	Low
Attack Requirements	None	Availability	High	Availability	Low
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Bull
Product	BullSequana XH3406
Versions	Default: unaffected affected from 0 to TS 04.05 (excl.)

Vendor	Bull
Product	BullSequana XH3515
Versions	Default: unaffected affected from 0 to TS 43.01 (excl.)

Affected Configurations

Reset to factory default operation.

Solutions

Apply one of the fixed Technical state mentionned above.

References

https://myatos.my.site.com/psmcustomer/s/contentdocument/069ci00000eNzLYAA0

Problem Types

CWE-258 Empty password in configuration file CWE

Impacts

CAPEC-70 Try Common or Default Usernames and Passwords