CVE-2021-45656

What it is

Certain NETGEAR devices are affected by server-side injection. This affects D6200 before 1.1.00.38, D7000 before 1.0.1.78, R6020 before 1.0.0.48, R6080 before 1.0.0.48, R6050 before 1.0.1.26, JR6150 before 1.0.1.26, R6120 before 1.0.0.66, R6220 before 1.1.0.100, R6230 before 1.1.0.100, R6260 before 1.1.0.78, R6800 before 1.2.0.76, R6900v2 before 1.2.0.76, R6700v2 before 1.2.0.76, R7450 before 1.2.0.76, AC2100 before 1.2.0.76, AC2400 before 1.2.0.76, AC2600 before 1.2.0.76, RBK40 before 2.5.1.16, RBR40 before 2.5.1.16, RBS40 before 2.5.1.16, RBK20 before 2.5.1.16, RBR20 before 2.5.1.16, RBS20 before 2.5.1.16, RBK50 before 2.5.1.16, RBR50 before 2.5.1.16, RBS50 before 2.5.1.16, and RBS50Y before 2.6.1.40.

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering.

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. 2021-12-26 01:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 04:13 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: 7.1 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2021-12-26 01:15 UTC

Last modified

2026-06-17 04:13 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-74

Record status

Modified

Affected

• Netgear d6200 Firmware < 1.1.00.38
• Netgear d7000 Firmware < 1.0.1.78
• Netgear r6020 Firmware < 1.0.0.48
• Netgear r6080 Firmware < 1.0.0.48
• Netgear r6050 Firmware < 1.0.1.26
• Netgear jr6150 Firmware < 1.0.1.26
• Netgear r6120 Firmware < 1.0.0.66
• Netgear r6220 Firmware < 1.1.0.100

Attack profile CVSS 3.1 · 7.1

Attack vector

Local

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-45656.md and follow it. Check whether this project is affected by CVE-2021-45656. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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