Authenticated command execution via unsanitized ping destination
Published Apr 21, 2026 · Updated Apr 21, 2026
Command injection in COMFAST CF-N1-S 2.6.0.1 allows remote authenticated users to execute arbitrary shell commands via destination input. In webmgnt's sub_442E34 function, the destination value is inserted into a ping command with sprintf without validation, then passed to system. A valid session cookie is required, and successful exploitation runs commands with the web service's privileges, enabling device compromise.
Summary
What happened
Command injection in COMFAST CF-N1-S 2.6.0.1 allows remote authenticated users to execute arbitrary shell commands via destination input. In webmgnt's sub_442E34 function, the destination value is inserted into a ping command with sprintf without validation, then passed to system. A valid session cookie is required, and successful exploitation runs commands with the web service's privileges, enabling device compromise.
The record
- CVE
- CVE-2026-6799
- Published
- Apr 21, 2026
- Updated
- Apr 21, 2026
- Vendor
- COMFAST
- Product
- CF-N1-S
- Classifications
- CWE-74, CWE-77, T1059.004
- Attack vector
- network
- Privileges
- authenticated
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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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.6.0.1
What conditions does exploitation require?
What is affected?
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
- COMFAST CF-N1-S authenticated command-injection proof of conceptproof of concept · unverified
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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