CVE-2020-27872

moderate-risk

Published 2021-02-04

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7450 1.2.0.62_1.0.1 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 improper state tracking in the password recovery process. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-11365.

Do I need to act?

1.1% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 8.8/10 High

ADJACENT_NETWORK / LOW complexity

Affected Products (19)

Ac2100 Firmware

Ac2400 Firmware

Ac2600 Firmware

R6700 Firmware

R6800 Firmware

R6900 Firmware

R7200 Firmware

R7350 Firmware

R7400 Firmware

R7450 Firmware

R6220 Firmware

R6230 Firmware

R6260 Firmware

R6330 Firmware

R6350 Firmware

R6850 Firmware

R6120 Firmware

R6020 Firmware

R6080 Firmware

Affected Vendors

Netgear

References (4)

Vendor Advisory https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnera...

Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-21-071/

Vendor Advisory https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnera...

Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-21-071/

/ 100

moderate-risk

Severity 27/34 · High

Exploitability 3/34 · Minimal

Exposure 19/34 · Moderate