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CVE-2021-34236: Buffer Overflow in Netgear R8000 Router with firmware v1.0.4.56 allows remote attackers to execute arbitrary code or cause a denial-of-service by sending a crafted POST to '/bd_genie_create_account...
CVE-2021-34236 · published 4 years ago
Summary
Buffer Overflow in Netgear R8000 Router with firmware v1.0.4.56 allows remote attackers to execute arbitrary code or cause a denial-of-service by sending a crafted POST to '/bd_genie_create_account.cgi' with a sufficiently long parameter 'register_country'.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| netgear | r8000_firmware |
1.0.4.56 cpe:2.3:o:netgear:r8000_firmware:1.0.4.56:*:*:*:*:*:*:* |
Original advisory text
Buffer Overflow in Netgear R8000 Router with firmware v1.0.4.56 allows remote attackers to execute arbitrary code or cause a denial-of-service by sending a crafted POST to '/bd_genie_create_account...
Buffer Overflow in Netgear R8000 Router with firmware v1.0.4.56 allows remote attackers to execute arbitrary code or cause a denial-of-service by sending a crafted POST to '/bd_genie_create_account.cgi' with a sufficiently long parameter 'register_country'.
References
- https://github.com/advisories/GHSA-vfq9-7wg3-4mjx Third Party Advisory
- https://github.com/Davidteeri/Bug-Report/blob/main/netgear-8000.md Broken Link
Internet-facing
3 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically (estimated)
- Gives an attacker full control (estimated)
Type
CWE-120Classic Buffer Overflow
Timeline
Published8 Sep 2022
Updated1 Nov 2026
First seen29 Sep 2026
Sources
CVE-2021-34236 · NVD
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