CVE-2025-12942: Improper input validation in NETGEAR R6260 and R6850

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-11-11 · updated 2026-10-18
Weakness: CWE-20

Description

Improper Input Validation vulnerability in NETGEAR R6260 and NETGEAR R6850 allows unauthenticated attackers connected to LAN with ability to perform MiTM attacks and control over DNS Server to perform command execution.This issue affects R6260: through 1.1.0.86; R6850: through 1.1.0.86.

Affected products

NETGEAR R6260: before 1.1.0.86 — fixed in 1.1.0.86
NETGEAR R6850 Firmware: before 1.1.0.86 — fixed in 1.1.0.86

How to fix

Upgrade to a fixed version: NETGEAR R6260 1.1.0.86; NETGEAR R6850 Firmware 1.1.0.86. Check the vendor advisory for mitigations.

References

https://kb.netgear.com/000070355/NETGEAR-Security-Advisories-November-2025
https://www.netgear.com/support/product/r6260
https://www.netgear.com/support/product/r6850

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