CVE-2023-39455

Authenticated arbitrary OS command execution

Published Aug 18, 2023 · Updated Aug 2, 2024

OS command injection in all versions of seven ELECOM WRC wireless LAN routers allows remote authenticated users to execute OS commands. Public records identify only a specially crafted request and do not disclose the endpoint, parameter, or unsafe command-construction operation. Exploitation requires high-privilege access from an adjacent network and grants control over the router through arbitrary commands.

CVSS severity6.8
Medium
EPSS probability1.49%
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 all versions of seven ELECOM WRC wireless LAN routers allows remote authenticated users to execute OS commands. Public records identify only a specially crafted request and do not disclose the endpoint, parameter, or unsafe command-construction operation. Exploitation requires high-privilege access from an adjacent network and grants control over the router through arbitrary commands.

The record

CVE
CVE-2023-39455
Published
Aug 18, 2023
Updated
Aug 2, 2024
Vendor
ELECOM CO., LTD.
Product
WRC-600GHBK-A
Classifications
CWE-78, T1059.008
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 18, 2023CVE 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=all versions

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

ELECOM CO., LTD. · WRC-600GHBK-Aversion=all versions
ELECOM CO., LTD. · WRC-1900GHBK-Sversion=all versions
ELECOM CO., LTD. · WRC-1900GHBK-Aversion=all versions
ELECOM CO., LTD. · WRC-733FEBK2-Aversion=all versions
ELECOM CO., LTD. · WRC-F1167ACF2version=all versions
ELECOM CO., LTD. · WRC-1467GHBK-Aversion=all versions
ELECOM CO., LTD. · WRC-1467GHBK-Sversion=all versions

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.2JPCERT/CC JVNAV:A/AC:L/Au:S/C:P/I:P/A:P
6.8JPCERT/CC JVNCVSS: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')
T1059.008Command and Scripting Interpreter: Network Device CLI

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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