CVE-2024-51252

Arbitrary command execution via restore command injection

Published Nov 1, 2024 · Updated Nov 4, 2024

OS command injection in DrayTek Vigor3900 firmware 1.5.1.3 allows attackers to execute arbitrary commands via the restore function. The restore action in mainfunction.cgi passes attacker-controlled command content to the operating system without neutralizing command elements. CISA rates reachability as adjacent and low-privileged, while NVD rates it as network and unauthenticated; execution can expose or alter router data and interrupt service.

CVSS severity9.8
Critical
EPSS probability0.81%
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 DrayTek Vigor3900 firmware 1.5.1.3 allows attackers to execute arbitrary commands via the restore function. The restore action in mainfunction.cgi passes attacker-controlled command content to the operating system without neutralizing command elements. CISA rates reachability as adjacent and low-privileged, while NVD rates it as network and unauthenticated; execution can expose or alter router data and interrupt service.

The record

CVE
CVE-2024-51252
Published
Nov 1, 2024
Updated
Nov 4, 2024
Vendor
DrayTek
Product
Vigor3900 Firmware
Classifications
CWE-78, CAPEC-88, T1059.004
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Nov 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 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=1.5.1.3

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

DrayTek · Vigor3900 Firmwareversion=1.5.1.3

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC-88OS Command Injection
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

No public exploit references are available in this record.

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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