OS Command Injection in SonicWall SMA100 Management Interface
CVE-2021-20035 is an operating system command injection vulnerability in the management interface of SonicWall Secure Mobile Access (SMA) 100 series appliances. SonicWall describes the issue as improper neutralization of special elements in the SMA100 management interface, allowing a remote authenticated attacker to inject arbitrary OS commands. The injected commands execute in the context of the 'nobody' user. SonicWall later updated its advisory to note that the issue may lead not only to denial of service but also to potential code execution. Reported affected products include SMA 200, SMA 210, SMA 400, SMA 410, and SMA 500v. Affected firmware branches include 9.0.0.10-28sv and earlier, 10.2.0.7-34sv and earlier, and 10.2.1.0-17sv and earlier.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
30 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A previous SonicWall vulnerability referenced as having confirmed active exploitation in the wild and inclusion in CISA's Known Exploited Vulnerabilities catalog.
A SonicWall SMA 100 Series OS command injection vulnerability added to CISA KEV due to active exploitation evidence.
An authenticated remote code execution vulnerability in SonicWall SMA referenced as a possible exploitation vector in UNC6148 activity.
A known vulnerability in SonicWall SMA 100 series appliances that may allow remote attackers to gain unauthorized access.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.