Which versions of Nr1800x Firmware are affected by CVE-2026-1327?

Organizations using A security vulnerability should be aware of moderate risk from CVE-2026-1327, a injection vulnerability rated CVSS 6.3.

Is there a public PoC exploit available for CVE-2026-1327?

Yes, a public proof-of-concept exploit is available for CVE-2026-1327. Prioritise patching immediately. EPSS: 0.7%.

How to fix or mitigate CVE-2026-1327?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Validate input sanitization for user-controlled parameters.

Nr1800x Firmware CVE-2026-1327

Q: What is the CVSS score of CVE-2026-1327?

CVE-2026-1327 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.7%.

LOW

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CWE-74)

2026-01-22 cna@vuldb.com

Command Injection Nr1800x Firmware TOTOLINK

2.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.1 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

6.3 (MEDIUM) 2.1 (LOW)

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 29, 2026 - 17:49 vuln.today

Public exploit code

CVE Published

Jan 22, 2026 - 15:16 nvd

MEDIUM 6.3

DescriptionCVE.org

A security vulnerability has been detected in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function setTracerouteCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Such manipulation of the argument command leads to command injection. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.

AnalysisAI

Totolik NR1800X firmware versions up to 9.1.0u.6279_B20210910 contain a command injection vulnerability in the setTracerouteCfg function that allows authenticated remote attackers to execute arbitrary commands via malicious POST requests. Public exploit code exists for this vulnerability, and no patch is currently available. An attacker with valid credentials can leverage this to achieve remote code execution on affected network devices.

Technical ContextAI

Affects Nr1800X Firmware. A security vulnerability has been detected in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function setTracerouteCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Such manipulation of the argument command leads to command injection. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.