CVE-2021-20049 Information disclosure in SonicWall SMA100

What is CVE-2021-20049?

CVE-2021-20049 is a high-severity vulnerability in SonicWall SMA100, published on 23 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in SonicWall SMA100 password change API allows a remote unauthenticated attacker to perform SMA100 username enumeration based on the server responses. This vulnerability impacts 10.2.1.2-24sv, 10.2.0.8-37sv and earlier 10.x versions.

Weakness: CWE-203, CWE-204

Which versions are affected by CVE-2021-20049?

It affects 6 products.

Products include Sonicwall Sma 100 Firmware, Sonicwall Sma 200 Firmware, Sonicwall Sma 210 Firmware, Sonicwall Sma 400 Firmware, Sonicwall Sma 410 Firmware, Sonicwall Sma 500v Firmware.

How do I fix CVE-2021-20049?

No fix has been published for CVE-2021-20049 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-20049 being exploited?

There is no known exploitation of CVE-2021-20049 in the wild and no public exploit code.

Other vulnerabilities in SonicWall SMA100

• CVE-2021-20016 SonicWall SSLVPN SMA100 SQL Injection Exploited Critical 9.8
• CVE-2019-7483 SonicWall SMA100 Directory Traversal Exploited High 7.5
• CVE-2019-7481 SonicWall SMA100 SQL Injection Exploited High 7.5
• CVE-2019-7482 Memory corruption in SMA100 Critical 9.8
• CVE-2025-32819 Path traversal in SMA100 High 8.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-8j6m-2r2j-2f2x.