CVE-2023-32150

Root command execution via unvalidated PrefixLen parameter

Published May 3, 2024 · Updated Sep 18, 2024

Command injection in D-Link DIR-2640 firmware 1.11B02 and earlier allows network-adjacent attackers to execute commands as root. The HNAP1 endpoint passes the user-controlled PrefixLen string to a system call without properly validating command syntax. Reaching the injection requires administrative authentication, although another interface flaw can bypass that gate; successful exploitation grants root command execution.

CVSS severity6.8
Medium
EPSS probability23.68%
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 D-Link DIR-2640 firmware 1.11B02 and earlier allows network-adjacent attackers to execute commands as root. The HNAP1 endpoint passes the user-controlled PrefixLen string to a system call without properly validating command syntax. Reaching the injection requires administrative authentication, although another interface flaw can bypass that gate; successful exploitation grants root command execution.

The record

CVE
CVE-2023-32150
Published
May 3, 2024
Updated
Sep 18, 2024
Vendor
D-Link
Product
DIR-2640
Classifications
CWE-78, T1059
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 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=1.11B02 (non-US, CA version)

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

D-Link · DIR-2640version=1.11B02 (non-US, CA version)
D-Link · DIR-2640 Firmwareversion=0 <=1.11b02

Published CVSS scores

6.8Zero Day InitiativeCVSS:3.0/AV:A/AC:L/PR:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
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.

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Technologies

Your stack

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Your stack

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