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Fencer Vulns
medium 4.1

CVE-2020-26917 json

Certain NETGEAR devices are affected by stored XSS.

published 2020-10-09 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-19447

cvss
4.1
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 50%
public exploits
0
none known

Summary

Certain NETGEAR devices are affected by stored XSS. This affects EX7000 before 1.0.1.78, R6250 before 1.0.4.34, R6400 before 1.0.1.46, R6400v2 before 1.0.2.66, R7100LG before 1.0.0.50, R7300DST before 1.0.0.70, R7900 before 1.0.3.8, R8300 before 1.0.2.128, and R8500 before 1.0.2.128.

Patch / fix

  • netgear ex7000_firmware 1.0.1.78
  • netgear r6250_firmware 1.0.4.34
  • netgear r6400_firmware 1.0.1.46
  • netgear r6400v2_firmware 1.0.2.66
  • netgear r7100lg_firmware 1.0.0.50
  • netgear r7300dst_firmware 1.0.0.70
  • netgear r7900_firmware 1.0.3.8
  • netgear r8300_firmware 1.0.2.128
  • netgear r8500_firmware 1.0.2.128

Exploit prediction

0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.1 CVSS:3.1/AC:L/AV:A/A:L/C:L/I:L/PR:H/S:U/UI:R
CNA 3.1 4.1 CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L
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

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.