Tongyu Ax1800 Firmware: Authentication Bypass Using an Alternate Path or Channel
CVE-2025-68707 is a high-severity authentication bypass using an alternate path or channel vulnerability in Tongyu Ax1800 Firmware from Tycc, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. Affected Tongyu Ax1800 Firmware versions: 1.0.0. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.45% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Tongyu Ax1800 Firmware you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Tycc | Tongyu Ax1800 Firmware | 1.0.0 | Not stated |
Version data comes from NVD's product matching. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- AdjacentThe attacker must be on the same local network segment.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CISA (ADP).
Official description
An authentication bypass vulnerability in the Tongyu AX1800 Wi-Fi 6 Router with firmware 1.0.0 allows unauthenticated network-adjacent attackers to perform arbitrary configuration changes without providing credentials, as long as a valid admin session is active. This can result in full compromise of the device (i.e., via unauthenticated access to /boaform/formSaveConfig and /boaform/admin endpoints).
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Authentication Bypass Using an Alternate Path or Channel
The product requires authentication, but the product has an alternate path or channel that does not require authentication.
How developers prevent this class of flaw
- Funnel all access through a single choke point to simplify how users can access a resource. For every access, perform a check to determine if the user has permissions to access the resource.
More Authentication Bypass Using an Alternate Path or Channel vulnerabilities (CWE-288)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- github.com/actuator/cve/blob/main/Tongyu/CVE-2025-68707.txtThird Party Advisory
Technical write-ups (may include proof of concept)
- github.com/actuator/cve/tree/main/TongyuExploit, Third Party Advisory
Recent Authentication Bypass Using an Alternate Path or Channel vulnerabilities
- 8.8 High severity
- 9.8 Critical severity
- 8.7 High severity
- 9.8 Critical severity
- 9.1 Critical severity
- 9.8 Critical severity
Spotted an error? Tell us.