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Known exploited vulnerability

CVE-2021-20028

criticalCVSS 3.1 9.8In CISA KEVRansomwareEPSS 30%Published · SonicWall

The short answer

CVE-2021-20028 affects SonicWall SonicWall SRA/SMA100 and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-03-28: attackers are using it, so patch it first.

What it is

Improper neutralization of a SQL Command leading to SQL Injection vulnerability impacting end-of-life Secure Remote Access (SRA) products, specifically the SRA appliances running all 8.x firmware and 9.0.0.9-26sv or earlier

Weakness: CWE-89.

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Mar 28, 2022

Federal due date Apr 18, 2022

EPSS, next 30 days

30%

Higher than 98% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

The impacted product is end-of-life and should be disconnected if still in use.

Affected products

SonicWall SRA/SMA100. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2021-20028 being exploited?

Yes. CISA added CVE-2021-20028 to its Known Exploited Vulnerabilities catalog on 2022-03-28, with a federal remediation due date of 2022-04-18. CISA lists it as used in ransomware campaigns.

How do I fix CVE-2021-20028?

CISA's required action: The impacted product is end-of-life and should be disconnected if still in use.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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