What’s Vulnerable › Vulnerabilities

CVE-2021-29081

• Severity: high (CVSS 8.4 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: 2021-03-23 · 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 RBW30 before 2.6.2.2, RBK852 before 3.2.17.12, RBK853 before 3.2.17.12, RBK854 before 3.2.17.12, RBR850 before 3.2.17.12, RBS850 before 3.2.17.12, RBK752 before 3.2.17.12, RBK753 before 3.2.17.12, RBK753S before 3.2.17.12, RBK754 before 3.2.17.12, RBR750 before 3.2.17.12, and RBS750 before 3.2.17.12.

Affected products

• NETGEAR Rbk752 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbk753 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbk753S Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbk754 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbk852 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbk853 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbk854 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbr750 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbr850 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• Netgear Orbi Satellite RBS750: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbs850 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbw30 Firmware: before 2.6.2.2 — fixed in 2.6.2.2

How to fix

Upgrade to a fixed version: NETGEAR Rbk752 Firmware 3.2.17.12; NETGEAR Rbk753 Firmware 3.2.17.12; NETGEAR Rbk753S Firmware 3.2.17.12; NETGEAR Rbk754 Firmware 3.2.17.12; NETGEAR Rbk852 Firmware 3.2.17.12; NETGEAR Rbk853 Firmware 3.2.17.12; NETGEAR Rbk854 Firmware 3.2.17.12; NETGEAR Rbr750 Firmware 3.2.17.12; NETGEAR Rbr850 Firmware 3.2.17.12; Netgear Orbi Satellite RBS750 3.2.17.12; NETGEAR Rbs850 Firmware 3.2.17.12; NETGEAR Rbw30 Firmware 2.6.2.2. Check the vendor advisory for mitigations.

References

• https://kb.netgear.com/000063012/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-WiFi-Systems-PSV-2020-0465
• https://kb.netgear.com/000063012/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-WiFi-Systems-PSV-2020-0465

Get alerted when CVE-2021-29081 or the next vulnerability affects your stack