What’s Vulnerable › Vulnerabilities

CVE-2020-9395

• Severity: high (CVSS 8.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-07-06 · updated 2026-06-17
• Weakness: CWE-787

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.

Affected products

• Realtek Rtl8195Am Firmware: before 2.0.6 — fixed in 2.0.6
• Realtek Rtl8710Af Firmware: before 2.0.6 — fixed in 2.0.6
• Realtek Rtl8711Af Firmware: before 2.0.6 — fixed in 2.0.6
• Realtek Rtl8711Am Firmware: before 2.0.6 — fixed in 2.0.6

How to fix

Upgrade to a fixed version: Realtek Rtl8195Am Firmware 2.0.6; Realtek Rtl8710Af Firmware 2.0.6; Realtek Rtl8711Af Firmware 2.0.6; Realtek Rtl8711Am Firmware 2.0.6. Check the vendor advisory for mitigations.

References

• https://github.com/ambiot/amb1_arduino/commit/dcea55cf9775a0166805b3db845b237ecd5e74ea#diff-d06e7a87f34cc464a56799a419033014
• https://github.com/ambiot/amb1_sdk/commit/bc5173d5d4faf6829074b0f1e1b242c12b7777a3#diff-700c216fb376666eaeda0c892e8bdc09
• https://www.amebaiot.com/en/security_bulletin/
• https://github.com/ambiot/amb1_arduino/commit/dcea55cf9775a0166805b3db845b237ecd5e74ea#diff-d06e7a87f34cc464a56799a419033014
• https://github.com/ambiot/amb1_sdk/commit/bc5173d5d4faf6829074b0f1e1b242c12b7777a3#diff-700c216fb376666eaeda0c892e8bdc09
• https://www.amebaiot.com/en/security_bulletin/

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