Unauthenticated login bypass via formLoginAuth request
Published Aug 13, 2025 · Updated Jul 5, 2026
Authentication bypass in TOTOLINK EX1200T firmware 4.1.2cu.5215 allows remote attackers to bypass login via formLoginAuth.htm. Published sources identify a specific request to that endpoint as the trigger but do not disclose the request fields or the authentication logic that accepts them. No credentials or user interaction are required, and a successful request grants access beyond the login gate; the exact post-authentication actions are not publicly documented.
Summary
What happened
Authentication bypass in TOTOLINK EX1200T firmware 4.1.2cu.5215 allows remote attackers to bypass login via formLoginAuth.htm. Published sources identify a specific request to that endpoint as the trigger but do not disclose the request fields or the authentication logic that accepts them. No credentials or user interaction are required, and a successful request grants access beyond the login gate; the exact post-authentication actions are not publicly documented.
The record
- CVE
- CVE-2025-51451
- Published
- Aug 13, 2025
- Updated
- Jul 5, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-287, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 13, 2025CVE publishedPublication date reported by the CVE source.
- Jul 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
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.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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