CVE-2020-5146
About
A vulnerability in SonicWall SMA100 appliance allow an authenticated management-user to perform OS command injection using HTTP POST parameters. This vulnerability affected SMA100 Appliance version 10.2.0.2-20sv and earlier.
Rainforest analyst review
An authenticated management user on the SonicWall SMA100 appliance can inject OS commands through HTTP POST parameters, gaining execution on the device. The vector's high-privilege requirement is the defining constraint: this needs a management-level account, not just any reachable session.
SMA appliances are internet-facing VPN gateways and perennial targets, which is what gives any bug here weight. But the PR:H requirement pulls this toward an insider or credential-theft scenario rather than a straight unauthenticated grab, so it's most dangerous as the second stage of a chain that starts with stolen management credentials.
We rank it accordingly, serious because of where the device sits, but tempered by the privilege precondition, and think about it as part of a chain rather than in isolation. The concrete steps are firmware inventory of SMA100 units, tight restriction of who can reach the management plane, and watching for the credential-theft that would unlock this in the first place.
References
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Frequently asked questions
What is CVE-2020-5146?
A vulnerability in SonicWall SMA100 appliance allow an authenticated management-user to perform OS command injection using HTTP POST parameters. This vulnerability affected SMA100 Appliance version 10.2.0.2-20sv and earlier.
How severe is CVE-2020-5146?
CVE-2020-5146 carries a CVSS 3.1 base score of 7.2, rated high. On the Rainforest Risk Index — which weighs the severity alongside how easy the flaw is to reach and how broad its impact is — it scores 76 out of 100, in the high band.
How is CVE-2020-5146 exploited?
According to the CVSS vector (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H): attack vector Network, attack complexity Low, privileges required High, user interaction None. Impact on confidentiality High, integrity High and availability High.
Which products are affected by CVE-2020-5146?
Public advisories list the following as affected: sma 100, sma 100 firmware. Check the references on this page for the exact versions each vendor confirms.
How do I fix CVE-2020-5146?
Apply the fix the vendor published — the references on this page link to the primary advisories and patches. When patching can't happen right away, reduce the exposure of the affected component and watch it for exploitation attempts. Rainforest customers see this vulnerability correlated to their own assets and prioritized by real exposure, not by score alone.
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