CVE-2019-18990
First published: Wed Sep 30 2020(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Realtek Rtl8812ar Firmware | =1.21ww | |
| Realtek RTL8812AR | ||
| Realtek Rtl8196d Firmware | =1.0.0 | |
| Realtek Rtl8196d | ||
| Realtek Rtl8192er Firmware | =2.10 | |
| Realtek Rtl8192er | ||
| Realtek Rtl8881an Firmware | =1.09 | |
| Realtek Rtl8881an |
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Frequently Asked Questions
What is CVE-2019-18990?
CVE-2019-18990 is a partial authentication bypass vulnerability that exists on Realtek RTL8812AR 1.21WW, RTL8196D 1.0.0, RTL8192ER 2.10, and RTL8881AN 1.09 devices.
How does CVE-2019-18990 work?
CVE-2019-18990 allows an attacker to send an unencrypted data frame to a WPA2-protected WLAN router, bypassing partial authentication and potentially gaining unauthorized access.
What is the severity of CVE-2019-18990?
CVE-2019-18990 has a severity rating of medium, with a CVSS score of 5.4.
Which devices are affected by CVE-2019-18990?
Realtek RTL8812AR 1.21WW, RTL8196D 1.0.0, RTL8192ER 2.10, and RTL8881AN 1.09 devices are affected by CVE-2019-18990.
How can I fix CVE-2019-18990?
To mitigate CVE-2019-18990, apply the latest firmware updates provided by Realtek for the affected devices.
- collector/nvd-index
- agent/weakness
- agent/references
- agent/severity
- agent/author
- agent/type
- agent/event
- agent/description
- agent/last-modified-date
- agent/softwarecombine
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- collector/mitre-cve
- source/MITRE
- vendor/realtek
- canonical/realtek rtl8812ar firmware
- version/realtek rtl8812ar firmware/1.21ww
- canonical/realtek rtl8812ar
- canonical/realtek rtl8196d firmware
- version/realtek rtl8196d firmware/1.0.0
- canonical/realtek rtl8196d
- canonical/realtek rtl8192er firmware
- version/realtek rtl8192er firmware/2.10
- canonical/realtek rtl8192er
- canonical/realtek rtl8881an firmware
- version/realtek rtl8881an firmware/1.09
- canonical/realtek rtl8881an