Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user.

published 2020-04-16 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-11274

cvss: 6.8; 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 43%
public exploits: 0; none known

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D3600 before 1.0.0.75, D6000 before V1.0.0.75, D6100 before V1.0.0.63, R7800 before v1.0.2.52, R8900 before v1.0.4.2, R9000 before v1.0.4.2, RBK50 before v2.3.0.32, RBR50 before v2.3.0.32, RBS50 before v2.3.0.32, WNDR3700v4 before V1.0.2.102, WNDR4300v1 before V1.0.2.104, WNDR4300v2 before v1.0.0.58, WNDR4500v3 before v1.0.0.58, WNR2000v5 before v1.0.0.68, and XR500 before V2.3.2.32.

Patch / fix

fixed in 14

netgear d3600_firmware 1.0.0.75
netgear d6000_firmware 1.0.0.75
netgear d6100_firmware 1.0.0.63
netgear r7800_firmware 1.0.2.52
netgear r8900_firmware 1.0.4.2
netgear r9000_firmware 1.0.4.2
netgear rbk50_firmware 2.3.0.32
netgear rbr50_firmware 2.3.0.32
netgear rbs50_firmware 2.3.0.32
netgear wndr3700_firmware 1.0.2.102
netgear wndr4300_firmware 1.0.0.58, 1.0.2.104
netgear wndr4500_firmware 1.0.0.58
netgear wnr2000_firmware 1.0.0.68
netgear xr500_firmware 2.3.2.32

Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	6.8	CVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:U/UI:N
NVD	3.1	6.8	CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA	3.0	6.8	CVSS:3.0/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-787 Out-of-bounds Write

References

kb.netgear.com /000061191/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-Gateways-and-WiFi-Systems-
vendor-advisory

Sources

CVE List CVE-2019-20735
NVD CVE-2019-20735

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