Which versions of Totolink NR1800X are affected by CVE-2026-5030?

Organizations using A vulnerability should be aware of moderate risk from CVE-2026-5030, a command injection vulnerability rated CVSS 5.3.

Is there a public PoC exploit available for CVE-2026-5030?

Yes, a public proof-of-concept exploit is available for CVE-2026-5030. Prioritise patching immediately. EPSS: 2.9%.

Totolink NR1800X CVE-2026-5030

Q: What is the CVSS score of CVE-2026-5030?

CVE-2026-5030 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: 2.9%.

EUVD-2026-16971 LOW

Command Injection (CWE-77)

2026-03-29 VulDB

Command Injection

2.1

CVSS 4.0

CVSS VectorNVD

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

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

5.3 (MEDIUM) 2.1 (LOW)

PoC Detected

Mar 30, 2026 - 19:00 vuln.today

Public exploit code

EUVD ID Assigned

Mar 29, 2026 - 04:30 euvd

EUVD-2026-16971

Analysis Generated

Mar 29, 2026 - 04:30 vuln.today

CVE Published

Mar 29, 2026 - 03:30 nvd

MEDIUM 5.3

DescriptionNVD

A vulnerability has been found in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument host_time leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

AnalysisAI

Command injection in Totolink NR1800X firmware 9.1.0u.6279_B20210910 allows authenticated remote attackers to execute arbitrary commands via the host_time parameter in the NTPSyncWithHost function of /cgi-bin/cstecgi.cgi. The vulnerability has a CVSS score of 6.3 (medium severity) with publicly available exploit code, though it requires valid login credentials to exploit. …

RemediationAI

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

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-5030 vulnerability details – vuln.today

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