TOTOLINK X18 cstecgi.cgi setMtknatCfg os command injection

published 2025-03-02 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-5854

cvss: 6.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 12.4%; EPSS 12.4% chance of exploitation in 30 days, percentile 96%
public exploits: 0; none known

A vulnerability was found in TOTOLINK X18 9.1.0cu.2024_B20220329. It has been declared as critical. This vulnerability affects the function setMtknatCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument mtkhnatEnable leads to os command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 20 mo ago (2025-03-03)

Exploit prediction

12.38% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/sjwszt/CVE/blob/main/CVE_2.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.3	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
CNA	3.1	6.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CNA	3.0	6.3	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CNA	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P
CNA	4.0	5.3	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:X/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
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

TOTOLINK X18

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command
CWE-77 Improper Neutralization of Special Elements used in a Command

References

github.com /sjwszt/CVE/blob/main/CVE_2.md
exploit, third-party-advisory
vuldb.com /?id.298096
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.298096
signature, permissions-required, vdb-entry
vuldb.com /?submit.504983
third-party-advisory, vdb-entry
totolink.net /
product

Sources

CVE List CVE-2025-1829
NVD CVE-2025-1829

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary