Totolink NR1800X 9.1.0u.6279_B20210910 Telnet Service /cgi-bin/cstecgi.cgi NTPSyncWithHost host_time command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k2.82

Summaryinfo

A vulnerability was found in Totolink NR1800X 9.1.0u.6279_B20210910 and classified as critical. Impacted is the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument host_time results in command injection. This vulnerability is reported as CVE-2026-5030. The attack can be launched remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability classified as critical has been found in Totolink NR1800X 9.1.0u.6279_B20210910. Affected is the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument host_time with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability.

The advisory is shared for download at lavender-bicycle-a5a.notion.site. This vulnerability is traded as CVE-2026-5030. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details and a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1202.

The exploit is shared for download at lavender-bicycle-a5a.notion.site. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-16971). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/27/2026 Advisory disclosed
03/27/2026 +0 days VulDB entry created
03/29/2026 +2 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: lavender-bicycle-a5a.notion.site
Status: Not defined

CVE: CVE-2026-5030 (🔒)
GCVE (CVE): GCVE-0-2026-5030
GCVE (VulDB): GCVE-100-353952
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/27/2026 17:01
Updated: 03/29/2026 08:26
Changes: 03/27/2026 17:01 (57), 03/29/2026 08:26 (1)
Complete: 🔍
Submitter: wxhwxhwxh_mie
Cache ID: 216:90D:103

Submitinfo

Accepted

  • Submit #778529: TOTOLINK NR1800X NR1800X_Firmware V9.1.0u.6279_B20210910 Command Injection (by wxhwxhwxh_mie)

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