Upstream information

CVE-2026-54161 at MITRE

Description

Network UPS Tools is a collection of programs which provide a common interface for monitoring and administering UPS, PDU and SCD hardware. From 2.8.3 to 2.8.5, upsmon in clients/upsmon.c inserts the server-supplied ups.alarm value into shell commands executed by notify(), async_notify(), and wall(). When a monitored device reports an ALARM state and an operator has configured NOTIFYCMD with EXEC in NOTIFYFLAG ALARM, shell metacharacters in the alarm text are evaluated on POSIX or Windows and can execute arbitrary operating-system commands as the upsmon account, which is commonly root. An attacker can control the value through a malicious or compromised upsd, a man-in-the-middle on a plaintext upsd to upsmon connection, or a compromised UPS device whose driver supplies the alarm upstream of upsd; TLS between upsd and upsmon does not mitigate the compromised-device path. This vulnerability is fixed in 2.8.6.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (GitHub) SUSE
Base Score 8.1 8.1
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network Network
Attack Complexity High High
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High High
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1270050 [IN_PROGRESS]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Server 16.1
  • libnutclient2 >= 2.8.5-160100.2.1
  • libnutclientstub1 >= 2.8.5-160100.2.1
  • libnutconf0 >= 2.8.5-160100.2.1
  • libnutscan4 >= 2.8.5-160100.2.1
  • libupsclient7 >= 2.8.5-160100.2.1
  • nut >= 2.8.5-160100.2.1
  • nut-doc-asciidoc >= 2.8.5-160100.2.1
  • nut-doc-html >= 2.8.5-160100.2.1
  • nut-doc-images >= 2.8.5-160100.2.1
  • nut-drivers-net >= 2.8.5-160100.2.1
 Patchnames:
SUSE Linux Enterprise Server 16.1 GA libnutclient2-2.8.5-160100.2.1 (aarch64,ppc64le,s390x,x86_64)
SUSE Linux Enterprise Server for SAP applications 16.1
  • libnutclient2 >= 2.8.5-160100.2.1
  • libnutclientstub1 >= 2.8.5-160100.2.1
  • libnutconf0 >= 2.8.5-160100.2.1
  • libnutscan4 >= 2.8.5-160100.2.1
  • libupsclient7 >= 2.8.5-160100.2.1
  • nut >= 2.8.5-160100.2.1
  • nut-doc-asciidoc >= 2.8.5-160100.2.1
  • nut-doc-html >= 2.8.5-160100.2.1
  • nut-doc-images >= 2.8.5-160100.2.1
  • nut-drivers-net >= 2.8.5-160100.2.1
 Patchnames:
SUSE Linux Enterprise Server for SAP applications 16.1 GA libnutclient2-2.8.5-160100.2.1 (aarch64,ppc64le,s390x,x86_64)
openSUSE Tumbleweed
  • libnutclient2 >= 2.8.5-2.1
  • libnutclientstub1 >= 2.8.5-2.1
  • libnutconf0 >= 2.8.5-2.1
  • libnutscan4 >= 2.8.5-2.1
  • libupsclient7 >= 2.8.5-2.1
  • nut >= 2.8.5-2.1
  • nut-cgi >= 2.8.5-2.1
  • nut-devel >= 2.8.5-2.1
  • nut-devel-doc-html >= 2.8.5-2.1
  • nut-doc-asciidoc >= 2.8.5-2.1
  • nut-doc-html >= 2.8.5-2.1
  • nut-doc-images >= 2.8.5-2.1
  • nut-drivers-net >= 2.8.5-2.1
 Patchnames:
openSUSE-Tumbleweed-2026-11367

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 nut Not affected
SUSE Linux Enterprise High Performance Computing 12 nut Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 nut Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP7 nut Not affected
SUSE Linux Enterprise Server 15 SP7 nut Not affected
SUSE Linux Enterprise Server 16.0 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 nut Not affected
SUSE Linux Enterprise Server for SAP applications 16.0 nut Not affected
openSUSE Leap 16.0 nut Not affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 12 SP5 nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS nut Not affected
SUSE Linux Enterprise Server 12 SP5 nut Not affected
SUSE Linux Enterprise Server 12 SP5-LTSS nut Not affected
SUSE Linux Enterprise Server 15 SP4-LTSS nut Not affected
SUSE Linux Enterprise Server 15 SP5-LTSS nut Not affected
SUSE Linux Enterprise Server 15 SP6-LTSS nut Not affected
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 nut Not affected
Products past their end of life and not receiving proactive updates anymore.
HPE Helion OpenStack 8 nut Not affected
SUSE CaaS Platform 4.0 nut Not affected
SUSE Enterprise Storage 6 nut Not affected
SUSE Enterprise Storage 7 nut Not affected
SUSE Enterprise Storage 7.1 nut Not affected
SUSE Linux Enterprise Desktop 12 nut Not affected
SUSE Linux Enterprise Desktop 12 SP1 nut Not affected
SUSE Linux Enterprise Desktop 12 SP2 nut Not affected
SUSE Linux Enterprise Desktop 12 SP3 nut Not affected
SUSE Linux Enterprise Desktop 12 SP4 nut Not affected
SUSE Linux Enterprise Desktop 15 SP2 nut Not affected
SUSE Linux Enterprise Desktop 15 SP3 nut Not affected
SUSE Linux Enterprise Desktop 15 SP4 nut Not affected
SUSE Linux Enterprise Desktop 15 SP5 nut Not affected
SUSE Linux Enterprise Desktop 15 SP6 nut Not affected
SUSE Linux Enterprise High Performance Computing 12 SP1 nut Not affected
SUSE Linux Enterprise High Performance Computing 12 SP2 nut Not affected
SUSE Linux Enterprise High Performance Computing 12 SP3 nut Not affected
SUSE Linux Enterprise High Performance Computing 12 SP4 nut Not affected
SUSE Linux Enterprise High Performance Computing 15 nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2 nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3 nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4 nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5 nut Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS nut Not affected
SUSE Linux Enterprise High Performance Computing 15-ESPOS nut Not affected
SUSE Linux Enterprise High Performance Computing 15-LTSS nut Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 nut Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 nut Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP4 nut Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 nut Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 nut Not affected
SUSE Linux Enterprise Module for Server Applications 15 nut Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP1 nut Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP2 nut Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP3 nut Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP4 nut Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP5 nut Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP6 nut Not affected
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT nut Not affected
SUSE Linux Enterprise Real Time 15 SP2 nut Not affected
SUSE Linux Enterprise Real Time 15 SP3 nut Not affected
SUSE Linux Enterprise Real Time 15 SP4 nut Not affected
SUSE Linux Enterprise Server 12 nut Not affected
SUSE Linux Enterprise Server 12 SP1 nut Not affected
SUSE Linux Enterprise Server 12 SP1-LTSS nut Not affected
SUSE Linux Enterprise Server 12 SP2 nut Not affected
SUSE Linux Enterprise Server 12 SP2-BCL nut Not affected
SUSE Linux Enterprise Server 12 SP2-ESPOS nut Not affected
SUSE Linux Enterprise Server 12 SP2-LTSS nut Not affected
SUSE Linux Enterprise Server 12 SP3 nut Not affected
SUSE Linux Enterprise Server 12 SP3-BCL nut Not affected
SUSE Linux Enterprise Server 12 SP3-ESPOS nut Not affected
SUSE Linux Enterprise Server 12 SP3-LTSS nut Not affected
SUSE Linux Enterprise Server 12 SP4 nut Not affected
SUSE Linux Enterprise Server 12 SP4-ESPOS nut Not affected
SUSE Linux Enterprise Server 12 SP4-LTSS nut Not affected
SUSE Linux Enterprise Server 12-LTSS nut Not affected
SUSE Linux Enterprise Server 15 nut Not affected
SUSE Linux Enterprise Server 15 SP1 nut Not affected
SUSE Linux Enterprise Server 15 SP1-BCL nut Not affected
SUSE Linux Enterprise Server 15 SP1-LTSS nut Not affected
SUSE Linux Enterprise Server 15 SP2 nut Not affected
SUSE Linux Enterprise Server 15 SP2-BCL nut Not affected
SUSE Linux Enterprise Server 15 SP2-LTSS nut Not affected
SUSE Linux Enterprise Server 15 SP3 nut Not affected
SUSE Linux Enterprise Server 15 SP3-BCL nut Not affected
SUSE Linux Enterprise Server 15 SP3-LTSS nut Not affected
SUSE Linux Enterprise Server 15 SP4 nut Not affected
SUSE Linux Enterprise Server 15 SP5 nut Not affected
SUSE Linux Enterprise Server 15 SP6 nut Not affected
SUSE Linux Enterprise Server 15-LTSS nut Not affected
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 12 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP1 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 15 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 nut Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 nut Not affected
SUSE Linux Enterprise Software Development Kit 12 nut Not affected
SUSE Linux Enterprise Software Development Kit 12 SP1 nut Not affected
SUSE Linux Enterprise Software Development Kit 12 SP2 nut Not affected
SUSE Linux Enterprise Software Development Kit 12 SP3 nut Not affected
SUSE Linux Enterprise Software Development Kit 12 SP4 nut Not affected
SUSE Linux Enterprise Software Development Kit 12 SP5 nut Not affected
SUSE Manager Proxy 4.0 nut Not affected
SUSE Manager Proxy 4.1 nut Not affected
SUSE Manager Proxy 4.2 nut Not affected
SUSE Manager Proxy 4.3 nut Not affected
SUSE Manager Proxy LTS 4.3 nut Not affected
SUSE Manager Retail Branch Server 4.0 nut Not affected
SUSE Manager Retail Branch Server 4.1 nut Not affected
SUSE Manager Retail Branch Server 4.2 nut Not affected
SUSE Manager Retail Branch Server 4.3 nut Not affected
SUSE Manager Retail Branch Server LTS 4.3 nut Not affected
SUSE Manager Server 4.0 nut Not affected
SUSE Manager Server 4.1 nut Not affected
SUSE Manager Server 4.2 nut Not affected
SUSE Manager Server 4.3 nut Not affected
SUSE Manager Server LTS 4.3 nut Not affected
SUSE OpenStack Cloud 7 nut Not affected
SUSE OpenStack Cloud 8 nut Not affected
SUSE OpenStack Cloud 9 nut Not affected
SUSE OpenStack Cloud Crowbar 8 nut Not affected
SUSE OpenStack Cloud Crowbar 9 nut Not affected
openSUSE Leap 15.3 nut Not affected
openSUSE Leap 15.4 nut Not affected
openSUSE Leap 15.5 nut Not affected
openSUSE Leap 15.6 nut Not affected

SUSE Timeline for this CVE

CVE page created: Wed Jul 1 22:02:19 2026
CVE page last modified: Wed Nov 4 17:41:14 2026