CVE-2023-50200

Unauthenticated root code execution via cfgsave backusb

Published May 3, 2024 · Updated Aug 2, 2024

OS command injection in D-Link G416 firmware 1.08b02 and earlier allows network-adjacent attackers to execute code as root. The cfgsave backusb path in the TCP port 80 HTTP service passes a user-supplied string to a system call without proper validation. LAN-side access is required, but authentication and user interaction are not, so successful exploitation grants root control of the router.

CVSS severity8.8
High
EPSS probability0.92%
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 D-Link G416 firmware 1.08b02 and earlier allows network-adjacent attackers to execute code as root. The cfgsave backusb path in the TCP port 80 HTTP service passes a user-supplied string to a system call without proper validation. LAN-side access is required, but authentication and user interaction are not, so successful exploitation grants root control of the router.

The record

CVE
CVE-2023-50200
Published
May 3, 2024
Updated
Aug 2, 2024
Vendor
D-Link
Product
G416
Classifications
CWE-78, T1059
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=1.08b02

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

D-Link · G416version=1.08b02

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8Zero Day InitiativeCVSS:3.0/AV:A/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

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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