Arbitrary command execution via USB partition name
Published Apr 21, 2026 · Updated Apr 21, 2026
Command injection in Tenda W30E V2.0 16.01.0.21 allows remote attackers to execute arbitrary commands via a crafted HTTP request. The formSetUSBPartitionUmount handler executes newline-delimited shell syntax supplied through usbPartitionName, as demonstrated by appending text to /webroot_ro/index.html. The published request contains a W30E session cookie, although the advisory's CVSS assessment records no privileges required; successful exploitation modifies files and executes commands on the router.
Summary
What happened
Command injection in Tenda W30E V2.0 16.01.0.21 allows remote attackers to execute arbitrary commands via a crafted HTTP request. The formSetUSBPartitionUmount handler executes newline-delimited shell syntax supplied through usbPartitionName, as demonstrated by appending text to /webroot_ro/index.html. The published request contains a W30E session cookie, although the advisory's CVSS assessment records no privileges required; successful exploitation modifies files and executes commands on the router.
The record
- CVE
- CVE-2026-38835
- Published
- Apr 21, 2026
- Updated
- Apr 21, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-77, T1059
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 21, 2026CVE publishedPublication date reported by the CVE source.
- Apr 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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.
Weakness, pattern, technique
Public exploit references
- rep_2.md command-injection proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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