CVE-2021-21386

Command execution via unquoted decompiler arguments

Published Mar 24, 2021 · Updated Aug 3, 2024

Command injection in dwisiswant0 APKLeaks before 2.0.6-dev allows context-dependent attackers to execute OS commands through a crafted APK. The decompile method passes an unquoted command string to os.system, allowing delimiter characters propagated from the manifest package name to become shell syntax. Exploitation requires a user to analyze the malicious APK; injected commands run with the APKLeaks process's privileges and can read or modify accessible data.

CVSS severity4.8
Medium
EPSS probability2.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in dwisiswant0 APKLeaks before 2.0.6-dev allows context-dependent attackers to execute OS commands through a crafted APK. The decompile method passes an unquoted command string to os.system, allowing delimiter characters propagated from the manifest package name to become shell syntax. Exploitation requires a user to analyze the malicious APK; injected commands run with the APKLeaks process's privileges and can read or modify accessible data.

The record

CVE
CVE-2021-21386
Published
Mar 24, 2021
Updated
Aug 3, 2024
Vendor
dwisiswant0
Product
APKLeaks
Classifications
CWE-88, CWE-78, T1204.002, T1059
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 24, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.0.6-dev

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

dwisiswant0 · APKLeaksversion=< 2.0.6-dev

Published CVSS scores

10.0NVDAV:N/AC:L/Au:N/C:C/I:C/A:C
4.8GitHubCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1204.002User Execution: Malicious File
T1059Command and Scripting Interpreter

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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