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CVE-2026-36538

HIGH
7.3
CVSS Score
Published: May 27, 2026 at 12:00 AM UTC
Updated: October 19, 2026 at 10:10 PM UTC
1 product affected across 1 vendorNetis AC1200 Router NC21

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Severity
HIGH7.3
Exploit prediction
EPSS 0.3%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Source: cverecord
http://netis-system.com
Source: cverecord
https://github.com/sir3ns/cve-disclosure/blob/main/CVE-2026-36538/readme.md

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-798

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