Netgear JWNR2000v2 cmd_wireless command injection

published 2025-04-30 last yr. modified 2026-06-17 4mo ago also EUVD-2025-12724

cvss: 6.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.9%; EPSS 2.9% chance of exploitation in 30 days, percentile 87%
public exploits: 0; none known

A vulnerability was found in Netgear JWNR2000v2 1.0.0.11. It has been declared as critical. Affected by this vulnerability is the function cmd_wireless. The manipulation of the argument host leads to command injection. The attack can be launched remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Is CVE-2025-4121 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: last yr. (2025-04-30)

Exploit prediction

2.92% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

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	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Netgear JWNR2000v2

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

vuldb.com /?id.306601
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.306601
signature, permissions-required, vdb-entry
vuldb.com /?submit.560775
third-party-advisory, vdb-entry
github.com /jylsec/vuldb/blob/main/Netgear/netgear_JWNR2000v2/Command_injection-cmd_wireless-port_phy_set/README.md
related, broken-link
netgear.com /
product

Sources

CVE List CVE-2025-4121
NVD CVE-2025-4121

Fencer Intel 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.