CVE-2020-9395

Name: CVE-2020-9395
Creator: NVD / NIST
Published: 2020-07-06T22:15:11.553+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2020-9395 is a high-severity vulnerability rated 8/10 on the CVSS scale. An issue was discovered on Realtek RTL8195AM, RTL8711AM, RTL8711AF, and RTL8710AF devices before 2.0.6. A stack-based buffer overflow exists in the client code that takes care of WPA2's 4-way-handshake via a malformed EAPOL-Key packet with a long keydata buffer.. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

Description

An issue was discovered on Realtek RTL8195AM, RTL8711AM, RTL8711AF, and RTL8710AF devices before 2.0.6. A stack-based buffer overflow exists in the client code that takes care of WPA2's 4-way-handshake via a malformed EAPOL-Key packet with a long keydata buffer.

Metrics

CVSS 3.1

8/10

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

EPSS Probability

0.78%

51.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Realtek	Rtl8711af Firmware	< 2.0.6
Realtek	Rtl8711am Firmware	< 2.0.6
Realtek	Rtl8195am Firmware	< 2.0.6
Realtek	Rtl8710af Firmware	< 2.0.6

References

https://github.com/ambiot/amb1_arduino/commit/dcea55cf9775a0166805b3db845b237ecd5e74ea#diff-d06e7a87f34cc464a56799a419033014Patch, Third Party Advisory
https://github.com/ambiot/amb1_sdk/commit/bc5173d5d4faf6829074b0f1e1b242c12b7777a3#diff-700c216fb376666eaeda0c892e8bdc09Patch, Third Party Advisory
https://www.amebaiot.com/en/security_bulletin/Third Party Advisory
https://github.com/ambiot/amb1_arduino/commit/dcea55cf9775a0166805b3db845b237ecd5e74ea#diff-d06e7a87f34cc464a56799a419033014Patch, Third Party Advisory
https://github.com/ambiot/amb1_sdk/commit/bc5173d5d4faf6829074b0f1e1b242c12b7777a3#diff-700c216fb376666eaeda0c892e8bdc09Patch, Third Party Advisory
https://www.amebaiot.com/en/security_bulletin/Third Party Advisory

Timeline

Published: Jul 6, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-9395?

How severe is CVE-2020-9395?

CVE-2020-9395 has a CVSS score of 8/10 (HIGH severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2020-9395?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-9395?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST