Certain NETGEAR devices are affected by authentication bypass.

published 2020-10-09 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-19451

cvss: 8.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits: 0; none known

Certain NETGEAR devices are affected by authentication bypass. This affects GS110EMX before 1.0.1.7, GS810EMX before 1.7.1.3, XS512EM before 1.0.1.3, and XS724EM before 1.0.1.3.

Patch / fix

fixed in 4

netgear gs110emx_firmware 1.0.1.7
netgear gs810emx_firmware 1.7.1.3
netgear xs512em_firmware 1.0.1.3
netgear xs724em_firmware 1.0.1.3

Exploit prediction

0.77% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.3	CVSS:3.1/AC:L/AV:A/A:H/C:L/I:H/PR:N/S:U/UI:N
CNA	3.1	8.3	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	5.8	AV:A/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-287 Improper Authentication

References

kb.netgear.com /000062332/Security-Advisory-for-Authentication-Bypass-on-Some-Smart-Managed-Plus-Switches-PSV-2020-0305
vendor-advisory

Sources

CVE List CVE-2020-26921
NVD CVE-2020-26921

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