CVE-2026-19036Public exploitNetwork attack vector

Authenticated command execution via unsanitized ppp_custom

Published Aug 6, 2026 · Updated Aug 6, 2026

OS command injection in Shibby Tomato 1.28.0000 allows remote authenticated users to execute arbitrary commands through ppp_custom. The sub_40F88C function in /tmp/ppp/wanoptions incorporates ppp_custom into an OS command without neutralizing shell metacharacters. Administrative privileges are required, and successful exploitation yields command execution on the router without user interaction.

CVSS severity7.2
High
EPSS probability2.04%
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 Shibby Tomato 1.28.0000 allows remote authenticated users to execute arbitrary commands through ppp_custom. The sub_40F88C function in /tmp/ppp/wanoptions incorporates ppp_custom into an OS command without neutralizing shell metacharacters. Administrative privileges are required, and successful exploitation yields command execution on the router without user interaction.

The record

CVE
CVE-2026-19036
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
Shibby
Product
Tomato
Classifications
CWE-78, CWE-77, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2026Record 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=1.28.0000

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Shibby · Tomatoversion=1.28.0000

Published CVSS scores

8.3VulDBAV:N/AC:L/Au:M/C:C/I:C/A:C
7.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
7.2VulDBCVSS:3.1/AV:N/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.

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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)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('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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