CVE-2019-20716

Severity: medium (CVSS 6.8 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: 2020-04-16 · updated 2026-06-17
Weakness: CWE-787

Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects DGN2200v4 before 1.0.0.110 and DGND2200Bv4 before 1.0.0.109.

Affected products

NETGEAR Dgn2200 Firmware: before 1.0.0.110 — fixed in 1.0.0.110
NETGEAR Dgnd2200B Firmware: before 1.0.0.109 — fixed in 1.0.0.109

How to fix

Upgrade to a fixed version: NETGEAR Dgn2200 Firmware 1.0.0.110; NETGEAR Dgnd2200B Firmware 1.0.0.109. Check the vendor advisory for mitigations.

References

https://kb.netgear.com/000061212/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-DGN2200v4-and-DGND2200Bv4-PSV-2018-0241
https://kb.netgear.com/000061212/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-DGN2200v4-and-DGND2200Bv4-PSV-2018-0241

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