Now on Demand Ransomware Resilience & Recovery Summit - All Sessions Available
Connect with us

Hi, what are you looking for?



SonicWall Patches Command Injection Flaw in Firewall Management Application

SonicWall last week announced the availability of patches for a severe vulnerability in its Network Security Manager (NSM) product.

SonicWall last week announced the availability of patches for a severe vulnerability in its Network Security Manager (NSM) product.

NSM is a firewall management application that provides the ability to monitor and manage all network security services from a single interface, as well as to automate tasks to improve security operations. SonicWall’s platform is available both for on-premises deployments and as SaaS (Software-as-a-Service).

Tracked as CVE-2021-20026 and featuring a CVSS score of 8.8, the recently patched vulnerability impacts on-premises versions of SonicWall NSM, but does not affect NSM SaaS versions.

The issue, SonicWall reveals in a security advisory, is an OS command injection flaw that could be exploited by an attacker who has already been able to authenticate to a vulnerable system. The fact that authentication is required for exploitation lowers the severity of the flaw.

An authenticated attacker can send specially crafted HTTP requests to the vulnerable application to exploit the vulnerability.

“This critical vulnerability potentially allows a user to execute commands on a device’s operating system with the highest system privileges (root),” SonicWall explains.

The vulnerability impacts SonicWall NSM On-Prem 2.2.0-R10 and earlier releases, and was addressed with the release of NSM versions 2.2.1-R6 and 2.2.1-R6 (Enhanced).

In its advisory, SonicWall is urging all customers to apply the available patches as soon as possible, to ensure they remain protected.

Advertisement. Scroll to continue reading.

“SonicWall customers using the on-premises NSM versions outlined […] should upgrade to the respective patched version immediately,” the company says.

Related: SonicWall Zero-Day Exploited by Ransomware Group Before It Was Patched

Related: Three Zero-Day Flaws in SonicWall Email Security Product Exploited in Attacks

Related: SonicWall Patches SMA Zero-Day Vulnerability Exploited in Attacks

Related: SonicWall Says Internal Systems Targeted by Hackers Exploiting Zero-Day Flaws

Written By

Ionut Arghire is an international correspondent for SecurityWeek.

Click to comment


Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Join the session as we discuss the challenges and best practices for cybersecurity leaders managing cloud identities.


SecurityWeek’s Ransomware Resilience and Recovery Summit helps businesses to plan, prepare, and recover from a ransomware incident.


People on the Move

MSSP Dataprise has appointed Nima Khamooshi as Vice President of Cybersecurity.

Backup and recovery firm Keepit has hired Kim Larsen as CISO.

Professional services company Slalom has appointed Christopher Burger as its first CISO.

More People On The Move

Expert Insights

Related Content


Less than a week after announcing that it would suspended service indefinitely due to a conflict with an (at the time) unnamed security researcher...

Data Breaches

OpenAI has confirmed a ChatGPT data breach on the same day a security firm reported seeing the use of a component affected by an...

IoT Security

A group of seven security researchers have discovered numerous vulnerabilities in vehicles from 16 car makers, including bugs that allowed them to control car...


A researcher at IOActive discovered that home security systems from SimpliSafe are plagued by a vulnerability that allows tech savvy burglars to remotely disable...

Risk Management

The supply chain threat is directly linked to attack surface management, but the supply chain must be known and understood before it can be...


Patch Tuesday: Microsoft calls attention to a series of zero-day remote code execution attacks hitting its Office productivity suite.


Patch Tuesday: Microsoft warns vulnerability (CVE-2023-23397) could lead to exploitation before an email is viewed in the Preview Pane.

IoT Security

A vulnerability affecting Dahua cameras and video recorders can be exploited by threat actors to modify a device’s system time.