#VU49805 Improper input validation in MySQL Server

Published: 2021-01-20

Vulnerability identifier: #VU49805

Vulnerability risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-2011


Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MySQL Server
Server applications / Database software

Vendor: Oracle


The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the C API component in MySQL Client. A remote non-authenticated attacker can exploit this vulnerability to perform a denial of service (DoS) attack.

Install updates from vendor's website.

Vulnerable software versions

MySQL Server: 5.7.0 - 5.7.32, 8.0.0 - 8.0.22

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Latest bulletins with this vulnerability