CVE-2024-26023

Authenticated arbitrary OS command execution

Published Apr 15, 2024 · Updated Aug 1, 2024

OS command injection in seven BUFFALO Wi-Fi router models allows remote authenticated users to execute arbitrary OS commands. BUFFALO and JVN identify the flaw as OS command injection but do not disclose the affected endpoint, parameter, or shell invocation that mishandles input. Access to the router login interface and valid credentials are required; Internet-side exploitation is possible when remote access is enabled.

CVSS severity6.8
Medium
EPSS probability0.55%
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 seven BUFFALO Wi-Fi router models allows remote authenticated users to execute arbitrary OS commands. BUFFALO and JVN identify the flaw as OS command injection but do not disclose the affected endpoint, parameter, or shell invocation that mishandles input. Access to the router login interface and valid credentials are required; Internet-side exploitation is possible when remote access is enabled.

The record

CVE
CVE-2024-26023
Published
Apr 15, 2024
Updated
Aug 1, 2024
Vendor
BUFFALO INC.
Product
WSR-2533DHP2
Classifications
CWE-78, T1059
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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=firmware Ver. 1.10 and earlier

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

BUFFALO INC. · WSR-2533DHP2version=firmware Ver. 1.10 and earlier
BUFFALO INC. · WSR-2533DHPversion=firmware Ver. 1.06 and earlier
BUFFALO INC. · WCR-1166DSversion=0 <=1.32; version=firmware Ver. 1.32 and earlier
BUFFALO INC. · WSR-A2533DHP2version=firmware Ver. 1.10 and earlier
BUFFALO INC. · WSR-2533DHPLversion=firmware Ver. 1.06 and earlier
BUFFALO INC. · WSR-1166DHPversion=firmware Ver. 1.14 and earlier
BUFFALO INC. · WSR-1166DHP2version=firmware Ver. 1.14 and earlier

Published CVSS scores

4.2CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
6.8JPCERT/CC and IPACVSS: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 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 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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