What’s Vulnerable › Vulnerabilities

CVE-2021-39306

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-22 · updated 2026-06-17
• Weakness: CWE-787

Description

A stack buffer overflow was discovered on Realtek RTL8195AM device before 2.0.10, it exists in the client code when an attacker sends a big size Authentication challenge text in WEP security.

Affected products

• Realtek Rtl8195Am Firmware: before 2.0.10 — fixed in 2.0.10

How to fix

Upgrade to a fixed version: Realtek Rtl8195Am Firmware 2.0.10. Check the vendor advisory for mitigations.

References

• https://www.amebaiot.com/en/security_bulletin/cve-2021-39306/
• https://www.realtek.com
• https://www.amebaiot.com/en/security_bulletin/cve-2021-39306/
• https://www.realtek.com

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