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Security Bulletin: A format string security vulnerability has been identified in IBM Spectrum Scale (CVE-2021-29740)

Security Bulletin


A security vulnerability has been identified in IBM Spectrum Scale file system that could allow an attacker to execute arbirtary code. A fix for this vulnerability is available.

Vulnerability Details

CVEID:   CVE-2021-29740
DESCRIPTION:   IBM Spectrum Scalefile system core component is affected by a format string security vulnerability. An attacker could execute arbitrary code in the context of process memory, potentially escalating their system privileges and taking control over the entire system with root access.
CVSS Base score: 8.4
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Spectrum Scale5.0.0 -
IBM Spectrum Scale5.1.0 -


For IBM Spectrum Scale V5.1.0 through V5.1.0.3, apply V5.1.1.0 or later available from FixCentral at:

For IBM Spectrum Scale V5.0.0 through V5.0.5.6, apply V5.0.5.7 or later available from FixCentral at:

If you cannot apply the above PTF level, contact IBM service to obtain and apply efix for your code level(s):
  • For IBM Spectrum Scale V5.1.0 through V5.1.0.3, reference  IJ32754
  • For IBM Spectrum Scale V5.0.0 through V5.0.5.6, reference IJ31853

Workarounds and Mitigations


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Change History

13 May 2021: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


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Document Location


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Document Information

Modified date:
02 June 2021