CVE-2026-36538
High
Description
Netis AC1200 Router NC21 V4.0.1.4296 contains a hard-coded root credential stored in /etc/shadow.sample. The password for the root account is set to the trivially weak value root, allowing an attacker with access to the device to authenticate as root and gain full control of the underlying operating system.
SeverityHigh
CVSS7.3
Exploit probability—
ProductAC1200 Router NC21
PublishedMay 27, 2026
First seenMay 27, 2026
Weakness typeCWE-798Hard-coded credentials
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Netis AC1200 Router NC21 | 4.0.1.4296 | — |
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