CVE-2020-27302

Name: CVE-2020-27302
Creator: NVD / NIST
Published: 2021-06-04T13:15:08.66+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8/10EPSS 2.01%

Last modified Jun 17, 2026

CVE-2020-27302 is a high-severity vulnerability rated 8/10 on the CVSS scale. A stack buffer overflow in Realtek RTL8710 (and other Ameba-based devices) can lead to remote code execution via the "memcpy" function, when an attacker in Wi-Fi range sends a crafted "Encrypted GTK" value as part of the WPA2 4-way-handshake.. EPSS estimates a 2.01% chance of exploitation in the next 30 days.

Description

A stack buffer overflow in Realtek RTL8710 (and other Ameba-based devices) can lead to remote code execution via the "memcpy" function, when an attacker in Wi-Fi range sends a crafted "Encrypted GTK" value as part of the WPA2 4-way-handshake.

Metrics

CVSS 3.1

8/10

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

EPSS Probability

2.01%

78.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Realtek	Rtl8710c Firmware	All versions
Realtek	Rtl8195a Firmware	All versions

References

https://www.vdoo.com/blog/realtek-wifi-vulnerabilities-zero-dayExploit, Third Party Advisory
https://www.vdoo.com/blog/realtek-wifi-vulnerabilities-zero-dayExploit, Third Party Advisory

Timeline

Published: Jun 4, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27302?

How severe is CVE-2020-27302?

CVE-2020-27302 has a CVSS score of 8/10 (HIGH severity). The EPSS model estimates a 2.01% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27302?

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-2020-27302?

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

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Source: NVD / NIST