Root command execution via unescaped CIFS parameters
Published Jul 13, 2026 · Updated Jul 13, 2026
OS command injection in Shibby Tomato 1.28.0000 and earlier allows remote authenticated users to execute commands as root. The mount-cifs path in sub_2D048 parses the cifs1 or cifs2 NVRAM value with vstrsep and passes a resulting command to system without shell escaping or input validation. Authenticated access that permits CIFS configuration changes is required, and triggering the mount operation interprets injected shell metacharacters with router privileges.
Summary
What happened
OS command injection in Shibby Tomato 1.28.0000 and earlier allows remote authenticated users to execute commands as root. The mount-cifs path in sub_2D048 parses the cifs1 or cifs2 NVRAM value with vstrsep and passes a resulting command to system without shell escaping or input validation. Authenticated access that permits CIFS configuration changes is required, and triggering the mount operation interprets injected shell metacharacters with router privileges.
The record
- CVE
- CVE-2026-15547
- Published
- Jul 13, 2026
- Updated
- Jul 13, 2026
- Vendor
- Shibby
- Product
- Tomato
- Classifications
- CWE-78, CWE-77, T1059.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 13, 2026CVE publishedPublication date reported by the CVE source.
- Jul 13, 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.
- Affected versionversion=1.0
- Affected versionversion=1.1
- Affected versionversion=1.10
- Affected versionversion=1.11
- Affected versionversion=1.12
- Affected versionversion=1.13
- Affected versionversion=1.14
- Affected versionversion=1.15
- Affected versionversion=1.16
- Affected versionversion=1.17
- Affected versionversion=1.18
- Affected versionversion=1.19
- Affected versionversion=1.2
- Affected versionversion=1.20
- Affected versionversion=1.21
- Affected versionversion=1.22
- Affected versionversion=1.23
- Affected versionversion=1.24
- Affected versionversion=1.25
- Affected versionversion=1.26
- Affected versionversion=1.27
- Affected versionversion=1.28.0000
- Affected versionversion=1.3
- Affected versionversion=1.4
- Affected versionversion=1.5
- Affected versionversion=1.6
- Affected versionversion=1.7
- Affected versionversion=1.8
- Affected versionversion=1.9
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Public exploit references
- Tomato CIFS mount command-injection proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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