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Fencer Intel
medium 4.8

CVE-2019-20721 json

Certain NETGEAR devices are affected by stored XSS.

published 6y ago modified 4mo ago also EUVD-2019-11260

cvss
4.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits
0
none known

Summary

Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.47, EX2700 before 1.0.1.48, EX6100v2 before 1.0.1.76, EX6150v2 before 1.0.1.76, EX6200v2 before 1.0.1.72, EX6400 before 1.0.2.136, EX7300 before 1.0.2.136, R7500v2 before 1.0.3.38, R7800 before 1.0.2.52, R8900 before 1.0.4.12, R9000 before 1.0.4.12, WN2000RPTv3 before 1.0.1.32, WN3000RPv2 before 1.0.0.68, WN3000RPv3 before 1.0.2.70, WN3100RPv2 before 1.0.0.66, WNDR4300v2 before 1.0.0.58, WNDR4500v3 before 1.0.0.58, WNR2000v5 before 1.0.0.66, XR450 before 2.3.2.32, and XR500 before 2.3.2.32.

Patch / fix

  • netgear d7800_firmware 1.0.1.47
  • netgear ex2700_firmware 1.0.1.48
  • netgear ex6100_firmware 1.0.1.76
  • netgear ex6150_firmware 1.0.1.76
  • netgear ex6200_firmware 1.0.1.72
  • netgear ex6400_firmware 1.0.2.136
  • netgear ex7300_firmware 1.0.2.136
  • netgear r7500_firmware 1.0.3.38
  • netgear r7800_firmware 1.0.2.52
  • netgear r8900_firmware 1.0.4.12
  • netgear r9000_firmware 1.0.4.12
  • netgear wn2000rpt_firmware 1.0.1.32
  • netgear wn3000rp_firmware 1.0.0.68, 1.0.2.70
  • netgear wn3100rp_firmware 1.0.0.66
  • netgear wndr4300_firmware 1.0.0.58
  • netgear wndr4500_firmware 1.0.0.58
  • netgear xr450_firmware 2.3.2.32
  • netgear xr500_firmware 2.3.2.32
  • netgear wnr2000_firmware 1.0.0.66

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Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 4.8 CVSS:3.0/AC:L/AV:A/A:N/C:L/I:L/PR:H/S:C/UI: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
CNA 3.0 4.8 CVSS:3.0/AV:A/AC:L/PR:H/UI:N/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

Sources

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.