CVE-2025-57278 Auth bypass in n/a
Attackers can gain full administrative access to the router by spoofing the IP address of an authenticated user, bypassing all authentication mechanisms.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-57278?
CVE-2025-57278 is a high-severity authentication bypass vulnerability in n/a, published on 9 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The LB-Link BL-CPE300M AX300 4G LTE Router firmware version BL-R8800_B10_ALK_SL_V01.01.02P42U14_06 does not implement proper session handling. After a user authenticates from a specific IP address, the router grants access to any other client using that same IP, without requiring credentials or verifying client identity. There are no session tokens, cookies, or unique identifiers in place. This flaw allows an attacker to obtain full administrative access simply by configuring their device to use the same IP address as a previously authenticated user. This results in a complete authentication bypass.
Weakness: CWE-287
Which versions are affected by CVE-2025-57278?
It affects 1 product.
Products include Lb-Link Bl-Cpe300m Firmware.
How do I fix CVE-2025-57278?
No fix has been published for CVE-2025-57278 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-57278 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-57278 exists.
Sources
Also known as GHSA-c68g-xh4v-hj6j.