Certain NETGEAR devices are affected by stored XSS.

published 2020-12-29 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-23484

cvss: 6.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits: 0; none known

Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.56, R7800 before 1.0.2.74, R8900 before 1.0.4.28, R9000 before 1.0.4.28, RAX120 before 1.0.0.78, RBK20 before 2.3.5.26, RBR20 before 2.3.5.26, RBS20 before 2.3.5.26, RBK40 before 2.3.5.30, RBR40 before 2.3.5.30, RBS40 before 2.3.5.30, RBK50 before 2.3.5.30, RBR50 before 2.3.5.30, RBS50 before 2.3.5.30, XR500 before 2.3.2.56, and XR700 before 1.0.1.10.

Patch / fix

fixed in 16

netgear d7800_firmware 1.0.1.56
netgear r7800_firmware 1.0.2.74
netgear r8900_firmware 1.0.4.28
netgear r9000_firmware 1.0.4.28
netgear rax120_firmware 1.0.0.78
netgear rbk40_firmware 2.3.5.30
netgear rbr40_firmware 2.3.5.30
netgear rbs40_firmware 2.3.5.30
netgear rbk20_firmware 2.3.5.26
netgear rbr20_firmware 2.3.5.26
netgear rbs20_firmware 2.3.5.26
netgear rbk50_firmware 2.3.5.30
netgear rbr50_firmware 2.3.5.30
netgear rbs50_firmware 2.3.5.30
netgear xr500_firmware 2.3.2.56
netgear xr700_firmware 1.0.1.10

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.1	CVSS:3.1/AC:L/AV:A/A:N/C:H/I:H/PR:H/S:U/UI:N
CNA	3.1	6.1	CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
NVD	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

kb.netgear.com /000062651/Security-Advisory-for-Stored-Cross-Site-Scripting-on-Some-Routers-and-WiFi-Systems-PSV-2018-0506
vendor-advisory

Sources

CVE List CVE-2020-35829
NVD CVE-2020-35829

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