What’s Vulnerable › Vulnerabilities

CVE-2017-18726

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-04-24 · 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 R6020 before 1.0.0.30, R6080 before 1.0.0.30, R6700v2 before 1.1.0.42, R6800 before 1.1.0.42, and R6900v2 before 1.1.0.42.

Affected products

• NETGEAR R6020 Firmware: before 1.0.0.30 — fixed in 1.0.0.30
• NETGEAR R6080 Firmware: before 1.0.0.30 — fixed in 1.0.0.30
• NETGEAR R6700: before 1.1.0.42 — fixed in 1.1.0.42
• NETGEAR R6800 Firmware: before 1.1.0.42 — fixed in 1.1.0.42
• NETGEAR R6900 Firmware: before 1.1.0.42 — fixed in 1.1.0.42

How to fix

Upgrade to a fixed version: NETGEAR R6020 Firmware 1.0.0.30; NETGEAR R6080 Firmware 1.0.0.30; NETGEAR R6700 1.1.0.42; NETGEAR R6800 Firmware 1.1.0.42; NETGEAR R6900 Firmware 1.1.0.42. Check the vendor advisory for mitigations.

References

• https://kb.netgear.com/000051529/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-PSV-2017-2139
• https://kb.netgear.com/000051529/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-PSV-2017-2139

Get alerted when CVE-2017-18726 or the next vulnerability affects your stack