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

published 2020-04-28 6y ago modified 2026-06-17 4mo ago also EUVD-2018-13717

cvss: 6.8; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits: 0; none known

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D7800 before 1.0.1.30, R6100 before 1.0.1.22, R7500 before 1.0.0.122, R7500v2 before 1.0.3.24, R7800 before 1.0.2.40, R9000 before 1.0.2.52, and WNDR4300 before 1.0.2.98.

Patch / fix

fixed in 6

netgear d7800_firmware 1.0.1.30
netgear r6100_firmware 1.0.1.22
netgear r7500_firmware 1.0.0.122, 1.0.3.24
netgear r7800_firmware 1.0.2.40
netgear r9000_firmware 1.0.2.52
netgear wndr4300_firmware 1.0.2.98

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Exploit prediction

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-09).

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 /000055150/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2593
vendor-advisory

Sources

CVE List CVE-2018-21199
NVD CVE-2018-21199

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