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Fencer Vulns
medium 6.9

CVE-2020-35840 json

Certain NETGEAR devices are affected by stored XSS.

published 2020-12-29 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-23495

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 46%
public exploits
0
none known

Summary

Certain NETGEAR devices are affected by stored XSS. This affects D6200 before 1.1.00.38, D7000 before 1.0.1.78, JNR1010v2 before 1.1.0.62, JR6150 before 1.0.1.24, JWNR2010v5 before 1.1.0.62, R6020 before 1.0.0.42, R6050 before 1.0.1.24, R6080 before 1.0.0.42, R6120 before 1.0.0.66, R6220 before 1.1.0.100, R6260 before 1.1.0.76, WNR1000v4 before 1.1.0.62, WNR2020 before 1.1.0.62, and WNR2050 before 1.1.0.62.

Patch / fix

  • netgear d6200_firmware 1.1.00.38
  • netgear d7000_firmware 1.0.1.78
  • netgear jnr1010v2_firmware 1.1.0.62
  • netgear jr6150_firmware 1.0.1.24
  • netgear jwnr2010v5_firmware 1.1.0.62
  • netgear r6020_firmware 1.0.0.42
  • netgear r6050_firmware 1.0.1.24
  • netgear r6080_firmware 1.0.0.42
  • netgear r6120_firmware 1.0.0.66
  • netgear r6220_firmware 1.1.0.100
  • netgear r6260_firmware 1.1.0.76
  • netgear wnr1000v4_firmware 1.1.0.62
  • netgear wnr2020_firmware 1.1.0.62
  • netgear wnr2050_firmware 1.1.0.62

Exploit prediction

0.55% 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 6.9 CVSS:3.1/AC:L/AV:A/A:N/C:L/I:H/PR:L/S:C/UI:R
CNA 3.1 6.9 CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:N
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/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

Sources

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.