Authenticated router crash via oversized submit-url
Published Jun 21, 2025 · Updated Jun 23, 2025
Buffer overflow in the X15 1.0.0-B20230714.1105 HTTP POST handler allows remote authenticated users to crash the router. The /boafrm/formIPv6Addr route accepts an oversized submit-url form value, and the handler processes it past the destination buffer bounds. A valid sessionCheck value is required, and the published proof of concept establishes a service interruption rather than code execution.
Summary
What happened
Buffer overflow in the X15 1.0.0-B20230714.1105 HTTP POST handler allows remote authenticated users to crash the router. The /boafrm/formIPv6Addr route accepts an oversized submit-url form value, and the handler processes it past the destination buffer bounds. A valid sessionCheck value is required, and the published proof of concept establishes a service interruption rather than code execution.
The record
- CVE
- CVE-2025-6399
- Published
- Jun 21, 2025
- Updated
- Jun 23, 2025
- Vendor
- TOTOLINK
- Product
- X15
- Classifications
- CWE-119, CWE-120, T1499.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 21, 2025CVE publishedPublication date reported by the CVE source.
- Jun 23, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.0-B20230714.1105
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
- TOTOLINK X15 formIPv6Addr denial-of-service proof of conceptproof of concept · demonstrated
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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