CVE-2026-19034Public exploitNetwork attack vector

Authenticated command execution via unescaped wan_iface argument

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 wan_iface. The new_qoslimit_stop function in /tmp/qoslimittc_stop.sh places the attacker-controlled interface value into shell commands without neutralizing shell metacharacters. Administrative access to the router's network management interface is required; successful exploitation grants arbitrary command execution on the router.

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 wan_iface. The new_qoslimit_stop function in /tmp/qoslimittc_stop.sh places the attacker-controlled interface value into shell commands without neutralizing shell metacharacters. Administrative access to the router's network management interface is required; successful exploitation grants arbitrary command execution on the router.

The record

CVE
CVE-2026-19034
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
Shibby
Product
Tomato
Classifications
CWE-77, CWE-78, 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
7.2VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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

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)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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