What’s Vulnerable › Vulnerabilities

CVE-2018-21122

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-04-22 · updated 2026-06-17
• Weakness: CWE-20

Description

Certain NETGEAR devices are affected by denial of service. This affects GS110EMX before 1.0.0.9, GS810EMX before 1.0.0.5, XS512EM before 1.0.0.6, and XS724EM before 1.0.0.6.

Affected products

• NETGEAR Gs110Emx Firmware: before 1.0.0.9 — fixed in 1.0.0.9
• NETGEAR Gs810Emx Firmware: before 1.0.0.5 — fixed in 1.0.0.5
• NETGEAR Xs512Em Firmware: before 1.0.0.6 — fixed in 1.0.0.6
• NETGEAR Xs724Em Firmware: before 1.0.0.6 — fixed in 1.0.0.6

How to fix

Upgrade to a fixed version: NETGEAR Gs110Emx Firmware 1.0.0.9; NETGEAR Gs810Emx Firmware 1.0.0.5; NETGEAR Xs512Em Firmware 1.0.0.6; NETGEAR Xs724Em Firmware 1.0.0.6. Check the vendor advisory for mitigations.

References

• https://kb.netgear.com/000060236/Security-Advisory-for-Denial-of-Service-on-Some-Switches-PSV-2018-0222
• https://kb.netgear.com/000060236/Security-Advisory-for-Denial-of-Service-on-Some-Switches-PSV-2018-0222

Get alerted when CVE-2018-21122 or the next vulnerability affects your stack