CISA KEV · Known exploitedCritical

CVE-2021-20016

SonicWall SSLVPN SMA100

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.

CVSS
9.8
EPSS
37.0%
98.4% percentile
CISA KEV
Listed
Published
2021.02.04
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability37.0%
Technical severityCVSS 9.8

Vulnerability overview

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.

Affected product and versions

Product
SonicWall SSLVPN SMA100
Affected versions
SMA100 build version 10.x, >= 10.0.0.0 < 10.2.0.5-d-29sv
Fixed versions
10.2.0.5-d-29sv

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2021.11.17
  1. 1
    Identify

    Confirm that SonicWall SSLVPN SMA100 and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-89
KEV added
2021.11.03
Ransomware use
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