CVE-2021-34865
8.8 · HIGHOverview
CVE-2021-34865 is a high-severity vulnerability affecting netgear ac2100_firmware. It was published on January 25, 2022 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-13313.
Remediation
Check the references section for vendor advisories and patches from netgear. Update ac2100_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| netgear | ac2100_firmware | >= 0, < 1.2.0.88 | Affected |
| netgear | ac2400_firmware | >= 0, < 1.2.0.88 | Affected |
| netgear | ac2600_firmware | >= 0, < 1.2.0.88 | Affected |
| netgear | d7000v1_firmware | >= 0, < 1.0.1.80 | Affected |
| netgear | r6220_firmware | >= 0, < 1.1.0.110 | Affected |
| netgear | r6230_firmware | >= 0, < 1.1.0.110 | Affected |
| netgear | r6260_firmware | >= 0, < 1.1.0.84 | Affected |
| netgear | r6330_firmware | >= 0, < 1.1.0.84 | Affected |
| netgear | r6350_firmware | >= 0, < 1.1.0.84 | Affected |
| netgear | r6700v2_firmware | >= 0, < 1.2.0.88 | Affected |
References
Frequently Asked Questions
What is CVE-2021-34865?
CVE-2021-34865 is a high-severity vulnerability affecting netgear ac2100_firmware. It was published on January 25, 2022 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2021-34865?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-34865?
Check the references section for vendor advisories and patches from netgear. Update ac2100_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-34865?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-34865 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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