Tenda RX3 telnet command injection

published 2025-05-06 18 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-13600

cvss: 4.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 15.8%; EPSS 15.8% chance of exploitation in 30 days, percentile 96%
public exploits: 0; none known

A vulnerability was found in Tenda RX3 16.03.13.11_multi. It has been rated as critical. This issue affects some unknown processing of the file /goform/telnet. The manipulation leads to command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 18 mo ago (2025-05-06)

Exploit prediction

15.79% 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/Ghostsuzhijian/Iot-/blob/main/RX3_telnetd/rx3_telnetd.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CNA	3.1	4.7	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
CNA	3.0	4.7	CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
CNA	2.0	5.8	AV:N/AC:L/Au:M/C:P/I:P/A:P
CNA	4.0	5.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Tenda RX3

Classification

Weakness

CWE-77 Improper Neutralization of Special Elements used in a Command
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

github.com /Ghostsuzhijian/Iot-/blob/main/RX3_telnetd/rx3_telnetd.md
exploit
vuldb.com /?id.307475
vdb-entry, third-party-advisory
vuldb.com /?ctiid.307475
signature, permissions-required, vdb-entry
vuldb.com /?submit.564727
third-party-advisory, vdb-entry
tenda.com.cn /
product

Sources

CVE List CVE-2025-4357
NVD CVE-2025-4357

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