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CVE-2021-20016

UNKNOWN
Published 2021-02-03T20:35:14.000Z
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CVSS Score

V3.1
9.8
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2023.03.01
0.027
probability
of exploitation in the wild

There is a 2.7% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-01-25
Exploit Probability
Percentile: 0.903
Higher than 90.3% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Description

A SQL-Injection vulnerability in the SonicWall SSLVPN SMA100 product allows a remote unauthenticated attacker to perform SQL query to access username password and other session related information. This vulnerability impacts SMA100 build version 10.x.

Available Exploits

No exploits available for this CVE.

Related News

Web Scanning SonicWall for CVE-2021-20016 - Update, (Wed, May 14th)

I published on the 29 Apr 2025 a diary [1] on scanning activity looking for SonicWall and since this publication this activity has grown 10-fold. Over the past 14 days, several BACS students have reported activity related to SonicWall scans all related for th…

Sans.edu 2025-05-15 01:23
Web Scanning Sonicwall for CVE-2021-20016, (Tue, Apr 29th)

There was a post initially published in January 2022 showing an exploitable "probable zero-day vulnerabilities"[1] for Sonicwall but looking back in what has been submitted in the past year to ISC, this past week was the first time we have been getting some r…

Sans.edu 2025-04-30 01:29

Affected Products

Known Exploited Vulnerability

This vulnerability is actively being exploited in the wild

View KEV Details

Remediation Status

Overdue

Due Date

November 17, 2021

Added to KEV

November 3, 2021

Required Action

Apply updates per vendor instructions.

Affected Product

Vendor/Project: SonicWall
Product: SSLVPN SMA100

Ransomware Risk

Known Ransomware Use
KEV Catalog Version: 2025.01.24 Released: January 24, 2025

References

Published: 2021-02-03T20:35:14.000Z
Last Modified: 2025-02-06T19:54:30.850Z
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