CVE-2026-19900 LB-LINK X-PRO shadow hard-coded credentials
Hard-coded credentials in the shadow file allow remote attackers to gain privileged access to LB-LINK X-PRO devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19900?
CVE-2026-19900 is a critical vulnerability in LB-LINK X-PRO, published on 15 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was identified in LB-LINK X-PRO 1.0.22-20231206. The impacted element is an unknown function of the file /etc/shadow. The manipulation leads to hard-coded credentials. It is possible to initiate the attack remotely. A high degree of complexity is needed for the attack. The exploitability is regarded as difficult. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-19900?
How do I fix CVE-2026-19900?
No fix has been published for CVE-2026-19900 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-19900 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19900 exists.
Public exploit code: 1 Nuclei template and 1 proofs of concept on GitHub.
Sources
Also known as GHSA-6pw8-xc67-fhhg.