Vulnerability Details CVE-2020-25856
The function DecWPA2KeyData() in the Realtek RTL8195A Wi-Fi Module prior to versions released in April 2020 (up to and excluding 2.08) does not validate the size parameter for an rtl_memcpy() operation, resulting in a stack buffer overflow which can be exploited for remote code execution or denial of service. An attacker can impersonate an Access Point and attack a vulnerable Wi-Fi client, by injecting a crafted packet into the WPA2 handshake. The attacker needs to know the network's PSK in order to exploit this.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.011
EPSS Ranking 77.0%
CVSS Severity
CVSS v3 Score 8.1
CVSS v2 Score 6.8
References
Products affected by CVE-2020-25856
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cpe:2.3:h:realtek:rtl8195a:-
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cpe:2.3:o:realtek:rtl8195a_firmware:-