CVE-2024-43027Public exploit

Authenticated command execution via jsonstatus system call

Published Aug 21, 2024 · Updated Aug 23, 2024

Command injection in DrayTek Vigor routers before 1.5.1.5_Beta allows remote authenticated users to execute arbitrary commands. When action is jsonstatus, cgi-bin/mainfunction.cgi passes attacker-controlled data to system(), while an inadequate blacklist permits shell metacharacters. Exploitation requires a valid router management session and adjacent-network access; injected commands run on the Linux-based appliance.

CVSS severity8.0
High
EPSS probability1.30%
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 DrayTek Vigor routers before 1.5.1.5_Beta allows remote authenticated users to execute arbitrary commands. When action is jsonstatus, cgi-bin/mainfunction.cgi passes attacker-controlled data to system(), while an inadequate blacklist permits shell metacharacters. Exploitation requires a valid router management session and adjacent-network access; injected commands run on the Linux-based appliance.

The record

CVE
CVE-2024-43027
Published
Aug 21, 2024
Updated
Aug 23, 2024
Vendor
DrayTek
Product
Vigor 300B
Classifications
CWE-77, T1059.004
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 23, 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=0 <1.5.1.5_Beta

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

DrayTek · Vigor 300Bversion=0 <1.5.1.5_Beta
DrayTek · Vigor3900 Firmwareversion=0 <1.5.1.5_Beta
DrayTek · Vigor 2960version=0 <1.5.1.5_Beta

Published CVSS scores

8.0CISA-ADPCVSS:3.1/AV:A/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)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('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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