CVE-2021-29465Public exploitNetwork attack vector

Code execution via unfiltered shell redirection

Published Apr 22, 2021 · Updated Aug 3, 2024

OS command injection in DEMON1A Discord-Recon 0.0.3 and earlier allows remote authenticated users to overwrite files via bot commands. Command handlers pass Discord-supplied tool arguments to a shell while the RCE blacklist fails to reject angle brackets, allowing output redirection to attacker-chosen paths. Access to invoke a bot tool or command is required; overwriting a startup or other executable file grants code execution under the bot account.

CVSS severity8.3
High
EPSS probability1.96%
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 DEMON1A Discord-Recon 0.0.3 and earlier allows remote authenticated users to overwrite files via bot commands. Command handlers pass Discord-supplied tool arguments to a shell while the RCE blacklist fails to reject angle brackets, allowing output redirection to attacker-chosen paths. Access to invoke a bot tool or command is required; overwriting a startup or other executable file grants code execution under the bot account.

The record

CVE
CVE-2021-29465
Published
Apr 22, 2021
Updated
Aug 3, 2024
Vendor
DEMON1A
Product
Discord-Recon
Classifications
CWE-94, CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 22, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=<= 0.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

DEMON1A · Discord-Reconversion=<= 0.0.3

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
8.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
9.8NIST NVDCVSS: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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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