Unauthenticated code execution via HTTP time overflow
Published Jul 3, 2025 · Updated Jul 3, 2025
Stack-based buffer overflow in Tenda AC6 firmware 15.03.05.16_multi allows remote attackers to execute code via the HTTP time parameter. The SetSysTimeCfg handler accepts an oversized time value from an HTTP request and overruns a stack buffer; the exact copy operation is undisclosed. The attack requires network access to the router's HTTP interface but no authentication or user interaction; the published proof does not document reliability.
Summary
What happened
Stack-based buffer overflow in Tenda AC6 firmware 15.03.05.16_multi allows remote attackers to execute code via the HTTP time parameter. The SetSysTimeCfg handler accepts an oversized time value from an HTTP request and overruns a stack buffer; the exact copy operation is undisclosed. The attack requires network access to the router's HTTP interface but no authentication or user interaction; the published proof does not document reliability.
The record
- CVE
- CVE-2025-50258
- Published
- Jul 3, 2025
- Updated
- Jul 3, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-120, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 3, 2025CVE publishedPublication date reported by the CVE source.
- Jul 3, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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
- SetSysTimeCfg time-parameter overflow reportproof of concept · unverified
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Technologies
Your stack
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Your stack
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