CVE-2026-19971 LB-Link WR1210M Backup Endpoint backup.cgi main missing authentication
An attacker on the local network can access the backup endpoint without authentication, potentially reading or modifying configuration data.
- 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-2026-19971?
CVE-2026-19971 is a medium-severity missing authorization vulnerability in LB-Link WR1210M, published on 17 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw has been found in LB-Link WR1210M 1.0.3. This impacts the function main of the file /www/cgi-bin/backup.cgi of the component Backup Endpoint. This manipulation causes missing authentication. The attack is only possible within the local network. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-19971?
How do I fix CVE-2026-19971?
No fix has been published for CVE-2026-19971 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-19971 being exploited?
There is no known exploitation of CVE-2026-19971 in the wild and no public exploit code.
Sources
Also known as GHSA-68gf-2fwf-ggrm.