NETGEAR R6400 devices before 1.0.1.70 are affected by server-side injection.

published 2021-12-26 4y ago modified 2026-06-17 4mo ago also EUVD-2021-32421

cvss: 6.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits: 0; none known

Patch / fix

fixed in 1 links 1

netgear r6400_firmware 1.0.1.70

kb.netgear.com/000064069/Security-Advisory-for-Server-Side-Injection-on-R… advisory

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Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.9	CVSS:3.1/AC:L/AV:A/A:H/C:N/I:L/PR:H/S:C/UI:N
CNA	3.1	6.9	CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H
NVD	3.1	6.8	CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	5.2	AV:A/AC:L/Au:S/C:P/I:P/A:P

Classification

Weakness

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

References

kb.netgear.com /000064069/Security-Advisory-for-Server-Side-Injection-on-R6400-PSV-2019-0178
patch, vendor-advisory

Sources

CVE List CVE-2021-45655
NVD CVE-2021-45655

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.