CVE-2026-38577 Hardcoded credentials in n/a

Critical 9.8 Published Updated

Attackers can gain root access to Tenda HG21 routers using insecure hardcoded admin credentials.

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-2026-38577?

CVE-2026-38577 is a critical vulnerability in n/a, published on 31 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Insecure hardcoded credentials in the Admin account of Tenda HG21 V4.0.0-260302 allows attackers to gain root access.

Weakness: CWE-798

Which versions are affected by CVE-2026-38577?

How do I fix CVE-2026-38577?

No fix has been published for CVE-2026-38577 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-38577 being exploited?

There is no known exploitation of CVE-2026-38577 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-9h8p-33cv-g2wj.

Is CVE-2026-38577 in your software?

Upload an SBOM and sbomify checks it against every vulnerability here, every day.

Check your SBOMs for free