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CVE-2021-20028 is an SQL injection vulnerability in SonicWall Secure Remote Access appliances caused by improper neutralization of special elements in SQL commands. It affects end-of-life SonicWall SMA/SRA appliances running all 8.x firmware versions and 9.0.0.9-26sv or earlier. The flaw is remotely reachable and has been scored CVSS 9.8, indicating that an unauthenticated attacker can exploit it over the network without user interaction. SonicWall indicated that the vulnerable feature was deprecated in 10.x firmware, and SMA 1000 Series products are not affected.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability affecting SonicWall SRA appliances; the content states affected appliances are end-of-life and have no available patches, making decommissioning necessary.
A critical SonicWall vulnerability (CVSS 9.8) listed in CISA KEV. The content indicates limited triggering during the campaign and explicitly warns that end-of-life SonicWall SRA appliances affected by this CVE have no patches available, recommending decommissioning/disconnection.
A vulnerability affecting SonicWall SMA100 appliances that was referenced as part of an exploitation campaign on internet-exposed devices to deploy LockBit ransomware.
A recently patched vulnerability affecting SonicWall VPN appliances for which working exploit code was publicly released, making it significant for intrusion and ransomware-related operations.
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.