Critical 9.8Published Mar 29, 2026

CVE-2026-5030A vulnerability has been found in Totolink NR1800X 9.1.0u.6279_B20210910.

Updated under an hour ago (2026-10-19 10:10 UTC)

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It affects totolink nr1800x_firmware. Add what you run to find out whether that includes you.

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Every CVE for totolink nr1800x_firmware

Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-74, CWE-77
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

totolink nr1800x_firmware totolink:nr1800x_firmware	9.1.0u.6279_b20210910	NVD

References

https://lavender-bicycle-a5a.notion.site/TOTOLINK-NR1800X-NTPSyncWithHost-32153a41781f8032afebc0802b704e9c?source=copy_linkexploit, third-party-advisory
https://vuldb.com/submit/778529third-party-advisory, vdb-entry
https://vuldb.com/vuln/353952third-party-advisory, vdb-entry
https://vuldb.com/vuln/353952/ctipermissions-required, vdb-entry
https://www.totolink.net/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.