CVE-2019-18990

medium

Description

A partial authentication bypass vulnerability exists on Realtek RTL8812AR 1.21WW, RTL8196D 1.0.0, RTL8192ER 2.10, and RTL8881AN 1.09 devices. The vulnerability allows sending an unencrypted data frame to a WPA2-protected WLAN router where the packet is routed through the network. If successful, a response is sent back as an encrypted frame, which would allow an attacker to discern information or potentially modify data.

References

https://www.synopsys.com/blogs/software-security/cyrc-advisory-sept2020/

Details

Source: Mitre, NVD

Published: 2020-09-30

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.8

Vector: CVSS2#AV:A/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.4

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00056