CVE-2023-39367Public exploitNetwork attack vector

Root command execution via unvalidated MAC parameter

Published Apr 17, 2024 · Updated Nov 4, 2025

OS command injection in Peplink Smart Reader 1.2.0 allows remote authenticated users to execute arbitrary commands through its web interface. The mac2name handler inserts the unvalidated mac POST parameter into a wget URL and passes the resulting command string to system(). Successful authentication and specific api.cgi routing values reach root-privileged execution on the appliance.

CVSS severity9.1
Critical
EPSS probability37.68%
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 Peplink Smart Reader 1.2.0 allows remote authenticated users to execute arbitrary commands through its web interface. The mac2name handler inserts the unvalidated mac POST parameter into a wget URL and passes the resulting command string to system(). Successful authentication and specific api.cgi routing values reach root-privileged execution on the appliance.

The record

CVE
CVE-2023-39367
Published
Apr 17, 2024
Updated
Nov 4, 2025
Vendor
Peplink
Product
Smart Reader
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v1.2.0
  2. Affected versionversion=v1.2.0 (in QEMU)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Peplink · Smart Readerversion=v1.2.0; version=v1.2.0 (in QEMU)

Published CVSS scores

7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
9.1Cisco TalosCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

Public exploit references

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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