CVSS 3.1
8.8 highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2021-34865
High (8.8) in netgear. EPSS 3.1% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 3.1% chance of exploitation in the next 30 days; higher than 87% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-697, CWE-287
- Published
- Modified
- Record from
- the NVD, synced
Affected
- netgear:ac2100_firmware
- netgear:ac2400_firmware
- netgear:ac2600_firmware
- netgear:d7000v1_firmware
- netgear:r6220_firmware
- netgear:r6230_firmware
- netgear:r6260_firmware
- netgear:r6330_firmware
- netgear:r6350_firmware
- netgear:r6700v2_firmware
- netgear:r6800_firmware
- netgear:r6850_firmware
- netgear:r6900v2_firmware
- netgear:r7200_firmware
- netgear:r7350_firmware
- netgear:r7400_firmware
- netgear:r7450_firmware
References
- https://kb.netgear.com/000063955/Security-Advisory-for-Authentication-Bypass-Vulnerability-on-Some-Routers-PSV-2021-0083?article=000063955
- https://www.zerodayinitiative.com/advisories/ZDI-21-1051/
- https://kb.netgear.com/000063955/Security-Advisory-for-Authentication-Bypass-Vulnerability-on-Some-Routers-PSV-2021-0083?article=000063955
- https://www.zerodayinitiative.com/advisories/ZDI-21-1051/