CVE-2023-2091

Local privilege escalation via shell-interpolated governor value

Published Apr 15, 2023 · Updated Nov 22, 2024

OS command injection in Kylin Assistant before 3.1.4.13 allows local users to execute arbitrary commands through its system D-Bus service. The adjust_cpufreq_scaling_governer method appends a caller-controlled governor value to a shell command and passes it to os.system() as root. Exploitation requires low-privileged local access and an exposed CPU-frequency scaling_governor node, yielding root command execution.

CVSS severity7.8
High
EPSS probability1.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Kylin Assistant before 3.1.4.13 allows local users to execute arbitrary commands through its system D-Bus service. The adjust_cpufreq_scaling_governer method appends a caller-controlled governor value to a shell command and passes it to os.system() as root. Exploitation requires low-privileged local access and an exposed CPU-frequency scaling_governor node, yielding root command execution.

The record

CVE
CVE-2023-2091
Published
Apr 15, 2023
Updated
Nov 22, 2024
Vendor
Kylinsoft Co., Ltd.
Product
Kylin Assistant
Classifications
CWE-78, T1059.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 22, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Kylinsoft Co., Ltd. · Kylin Assistantversion=n/a

Published CVSS scores

6.8VulDBAV:L/AC:L/Au:S/C:C/I:C/A:C
7.8VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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