CVE-2021-45638
What it is
Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D6220 before 1.0.0.68, D6400 before 1.0.0.102, D7000v2 before 1.0.0.74, D8500 before 1.0.3.60, DC112A before 1.0.0.56, R6300v2 before 1.0.4.50, R6400 before 1.0.1.68, R7000 before 1.0.11.116, R7100LG before 1.0.0.70, RBS40V before 2.6.2.8, RBW30 before 2.6.2.2, RS400 before 1.5.1.80, R7000P before 1.3.2.132, and R6900P before 1.3.2.132.
At a glance
- Exploitability
- Can be exploited from the same network segment without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 1.6% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.6% in the next 30 days (EPSS).
- Severity: 9.6 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.6% · EPSS, next 30 days
- Weakness
- CWE-787 · Out-of-bounds write
- Record status
- Modified
Affected
- Netgear d6220 Firmware < 1.0.0.68
- Netgear d6400 Firmware < 1.0.0.102
- Netgear d7000v2 Firmware < 1.0.0.74
- Netgear d8500 Firmware < 1.0.3.60
- Netgear dc112a Firmware < 1.0.0.56
- Netgear r6300v2 Firmware < 1.0.4.50
- Netgear r6400 Firmware < 1.0.1.68
- Netgear r7000 Firmware < 1.0.11.116
Attack profile CVSS 3.1 · 9.6
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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-2021-45638.md and follow it. Check whether this project is affected by CVE-2021-45638. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://kb.netgear.com/000064496/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-PSV-2020-0464
- https://kb.netgear.com/000064496/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-PSV-2020-0464