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CVE-2026-5030

Totolink NR1800X Telnet Service cstecgi.cgi NTPSyncWithHost command injection

CVSS 5.3 MEDIUMEPSS 2.3%CWE-74CWE-77
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 5.3EPSS 2.3%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
29 Mar 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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: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
Affected products
Totolink · NR1800X
public PoCs found — 1
cve_referencelavender-bicycle-a5a.notion.site/TOTOLINK-NR1800X-NTPSyncWithHost-32153a41781f8032afebc0802b704e9c?source=copy_linkunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
https://lavender-bicycle-a5a.notion.site/TOTOLINK-NR1800X-NTPSyncWithHost-32153a41781f8032afebc0802b704e9c?source=copy_linkhttps://vuldb.com/submit/778529https://vuldb.com/vuln/353952https://vuldb.com/vuln/353952/ctihttps://www.totolink.net/