Auth bypass in NETGEAR D6220
CVE-2021-34983
NETGEAR Multiple Routers httpd Missing Authentication for Critical Function Information Disclosure Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from the lack of authentication prior to allowing access to system configuration information. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-13708.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.zerodayinitiative.com/advisories/ZDI-21-1275/ (x_research-advisory, Third Party Advisory)
- kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-Buffer-Overfl… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-34983?
- CVE-2021-34983 is a medium-severity vulnerability in NETGEAR D6220, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2024-05-07.
- How severe is CVE-2021-34983?
- Medium severity. CVSS v3 base score is 6.5 out of 10.