CVE-2025-12946

What it is

A vulnerability in the speedtest feature of affected NETGEAR Nighthawk routers, caused by improper input validation, can allow attackers on the router's WAN side, using attacker-in-the-middle techniques (MiTM) to manipulate DNS responses and execute commands when speedtests are run. This issue affects RS700: through 1.0.7.82; RAX54Sv2 : before V1.1.6.36; RAX41v2: before V1.1.6.36; RAX50: before V1.2.14.114; RAXE500: before V1.2.14.114; RAX41: before V1.0.17.142; RAX43: before V1.0.17.142; RAX35v2: before V1.0.17.142; RAXE450: before V1.2.14.114; RAX43v2: before V1.1.6.36; RAX42: before V1.0.17.142; RAX45: before V1.0.17.142; RAX50v2: before V1.1.6.36; MR90: before V1.0.2.46; MS90: before V1.0.2.46; RAX42v2: before V1.1.6.36; RAX49S: before V1.1.6.36.

At a glance

Exploitability

Can be exploited from the same network segment without logging in, but needs a user to act. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2025-12-09 17:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-07 11:10 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.3% in the next 30 days (EPSS).
• Severity: 4.4 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2025-12-09 17:15 UTC

Last modified

2026-10-07 11:10 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-20 · Improper input validation

Record status

Analyzed

Affected

• Netgear rs700 Firmware < 1.0.9.6
• Netgear rax54sv2 Firmware < 1.1.6.36
• Netgear rax45v2 Firmware < 1.1.6.36
• Netgear rax41v2 Firmware < 1.1.6.36
• Netgear rax50 Firmware < 1.2.14.114
• Netgear raxe500 Firmware < 1.2.14.114
• Netgear rax41 Firmware < 1.0.17.142
• Netgear rax43 Firmware < 1.0.17.142

Attack profile CVSS 4.0 · 4.4

Attack vector

Adjacent network

Complexity

High

Attack requirements

Present

Privileges needed

None

User interaction

Active

Confidentiality

High

Integrity

High

Availability

High

Is it in your code?

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