Authenticated memory corruption via Wi-Fi schedule parameters
Published Jun 30, 2025 · Updated Jun 30, 2025
A stack-based buffer overflow in Tenda AC5 15.03.06.47 allows remote authenticated users to corrupt memory via Wi-Fi schedule requests. The /goform/openSchedWifi POST handler copies attacker-controlled schedStartTime or schedEndTime values into a fixed-size stack buffer without enforcing its capacity. Low-privileged management access is required; the resulting overwrite can redirect execution or crash the affected service.
Summary
What happened
A stack-based buffer overflow in Tenda AC5 15.03.06.47 allows remote authenticated users to corrupt memory via Wi-Fi schedule requests. The /goform/openSchedWifi POST handler copies attacker-controlled schedStartTime or schedEndTime values into a fixed-size stack buffer without enforcing its capacity. Low-privileged management access is required; the resulting overwrite can redirect execution or crash the affected service.
The record
- CVE
- CVE-2025-6886
- Published
- Jun 30, 2025
- Updated
- Jun 30, 2025
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- AC5
- Classifications
- CWE-121, CWE-119, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 30, 2025CVE publishedPublication date reported by the CVE source.
- Jun 30, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=15.03.06.47
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.
Weakness, pattern, technique
Public exploit references
- schedStartTime proof of conceptproof of concept · unverified
- schedEndTime proof of conceptproof of concept · unverified
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
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo