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3 vulnerabilities found for by networkupstools
CVE-2026-85068 (GCVE-0-2026-85068)
Vulnerability from cvelistv5
Published
2026-11-05 22:57
Modified
2026-11-05 22:57
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-457 - Use of Uninitialized Variable
Summary
Network UPS Tools is a collection of programs which provide a common interface for monitoring and administering UPS, PDU and SCD hardware. From 2.4.2 through 2.8.5, ippon_command in drivers/blazer_usb.c partially initializes char tmp[64] with a short Megatec status query and then passes a fixed eight-byte chunk to usb_control_msg. A malicious firmware-controlled USB device presenting the Mustek Powermust VID 0x06da and Mustek Powermust PID 0x0003 matches blazer_usb_id, selects ippon_subdriver, and can receive the uninitialized trailing stack bytes during normal polling. The disclosure is bounded and read-only, requires physical or supply-chain access to the USB bus, and has no established integrity or availability impact. This issue is scheduled to be fixed in version 2.8.6.
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| networkupstools | nut |
Version: >= 2.4.2, <= 2.8.5 |
{
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"product": "nut",
"vendor": "networkupstools",
"versions": [
{
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"version": "\u003e= 2.4.2, \u003c= 2.8.5"
}
]
}
],
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"value": "Network UPS Tools is a collection of programs which provide a common interface for monitoring and administering UPS, PDU and SCD hardware. From 2.4.2 through 2.8.5, ippon_command in drivers/blazer_usb.c partially initializes char tmp[64] with a short Megatec status query and then passes a fixed eight-byte chunk to usb_control_msg. A malicious firmware-controlled USB device presenting the Mustek Powermust VID 0x06da and Mustek Powermust PID 0x0003 matches blazer_usb_id, selects ippon_subdriver, and can receive the uninitialized trailing stack bytes during normal polling. The disclosure is bounded and read-only, requires physical or supply-chain access to the USB bus, and has no established integrity or availability impact. This issue is scheduled to be fixed in version 2.8.6."
}
],
"metrics": [
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"attackVector": "PHYSICAL",
"availabilityImpact": "NONE",
"baseScore": 2.4,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
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},
"references": [
{
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"tags": [
"x_refsource_CONFIRM"
],
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},
{
"name": "https://github.com/networkupstools/nut/pull/3529",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/networkupstools/nut/pull/3529"
},
{
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],
"url": "https://github.com/networkupstools/nut/commit/30d56d4282f823949b40763d5c76461c7dd107b3"
}
],
"source": {
"advisory": "GHSA-fjxc-2vpv-mqc8",
"discovery": "UNKNOWN"
},
"title": "NUT blazer_usb ippon_command stack info-leak via unzeroed char tmp[64] in OUT-direction usb_control_msg"
}
},
"cveMetadata": {
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CVE-2026-54161 (GCVE-0-2026-54161)
Vulnerability from cvelistv5
Published
2026-11-03 19:57
Modified
2026-11-03 22:39
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Summary
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.
References
| URL | Tags | |
|---|---|---|
|
|
||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| networkupstools | nut |
Version: >= 2.8.3, <= 2.8.5 |
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},
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}
],
"cna": {
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}
],
"metrics": [
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"attackVector": "NETWORK",
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],
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"tags": [
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"url": "https://github.com/networkupstools/nut/commit/ecf98e7542e4ae2b62b211622ee26989274b2220"
}
],
"source": {
"advisory": "GHSA-mjgp-j4gm-6qg5",
"discovery": "UNKNOWN"
},
"title": "upsmon: remote OS command injection (RCE) via attacker-controlled ups.alarm in NOTIFYCMD execution"
}
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"cveMetadata": {
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CVE-2026-54160 (GCVE-0-2026-54160)
Vulnerability from cvelistv5
Published
2026-09-28 16:35
Modified
2026-09-28 17:23
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Summary
Network UPS Tools is a collection of programs which provide a common interface for monitoring and administering UPS, PDU and SCD hardware. Prior to commits 658b24e and 1aa31d1, the GitHub Actions script used to prepare NUT tarballs and update GitHub Checks statuses and PR comments about it was mis-structured in terms of mixing code running with higher privileges (single-use token generated with write permissions) and untrusted inputs (PR source branch). A malicious PR run from a fork could extract the GITHUB_TOKEN value. It could potentially be abused while it was valid (while the GHA job ran) to manipulate Git repository contents, commit checks/statuses, or issue/PR comments, according to permissions it was issued with. This issue has been patched via commits 658b24e and 1aa31d1.
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| networkupstools | nut |
Version: < 658b24ef8410648ceca6d5a59e8690efbc8c36bc |
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"timestamp": "2026-09-28T17:20:39.961891Z",
"version": "2.0.3"
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}
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