CVE-2026-71961High· 8.8▾ Twilight

Cudy WR3000 2.0 running firmware before 2.5.24 contains an OS command injection vulnerability that allows authenticated attackers to execute arbitrary OS commands with root privileges by sending unsanitized input through the mesh MQTT co…

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score49/ 100 · Moderate

impact 48.4 · likelihood 0.5 · exploitation 0

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Proof of concept

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Published

Aug 19, 2026

Updated

Sep 9, 2026

CVSS

8.8

Vendor

—

Product

—

CWE

CWE-78

Depth score

49 · Moderate

EPSS

2.7% · p86

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS history

Exploit-prediction probability, daily snapshots since Sep 9.

3.1% → 2.7%▼ 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 21 days

Aug 19, 2026Published
Disclosed via NVD
Sep 9, 2026Record revised
Last analysed / modified upstream
Sep 9, 2026EPSS first tracked
3.1%

CWE-78 #nvd

Full technical detail▾

Overview

Cudy WR3000 2.0 running firmware before 2.5.24 contains an OS command injection vulnerability that allows authenticated attackers to execute arbitrary OS commands with root privileges by sending unsanitized input through the mesh MQTT command interface. The sync_command binary forwards unsanitized input directly to a shell execution sink in command.lua, enabling attackers with access to the MQTT broker to exploit the default-enabled command execution path to achieve full root-level system compromise.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd

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