Exploited vulnerabilities / CVE-2026-83549
Confirmed exploited · remote code execution · SonicWall SMA1000 AppliancesCVE-2026-83549
SonicWall SMA1000 Appliances remote code execution, confirmed exploited in the wild.
SonicWall SMA1000 Appliances contains an OS command injection vulnerability that could enable a remote authenticated attacker as administrator to execute arbitrary OS commands, resulting in remote code execution.
| CISA's name for it | SonicWall SMA1000 Appliances OS Command Injection Vulnerability |
|---|---|
| Vendor and product | SonicWall · SMA1000 Appliances |
| Type | remote code execution · CWE-78 |
| Exploited | Confirmed by CISA listed 2 September 2026 |
| Likelihood | one of the most likely to be exploited of every vulnerability tracked |
| Deadline | 5 September 2026 · already passed |
| Used in ransomware | Not reported |
| Advisories | psirt.global.sonicwall.com ↗ · www.cisa.gov ↗ · www.cisa.gov ↗ · nvd.nist.gov ↗ |
Three steps, in this order
Patch to the fixed version the vendor names, today if the product faces the internet.
Until it is patched, take the affected service off the internet or put it behind a VPN or allow-list.
Look for signs it was already used: new accounts, web shells, unexpected processes and outbound connections since the date it was listed.
| CISA's required action | Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. |
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Know before someone else finds it
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CVE-2026-83549 in short
Is CVE-2026-83549 being exploited?
Yes. CISA added CVE-2026-83549 to its Known Exploited Vulnerabilities catalogue on 2 September 2026, which it does only on evidence of exploitation in the wild.
What is the CISA deadline for CVE-2026-83549?
US federal agencies must remediate it by 5 September 2026. Everyone else should treat that date as the latest safe point to patch an internet-facing system.
How likely is CVE-2026-83549 to be exploited in the next 30 days?
FIRST's Exploit Prediction Scoring System gives it 9.9%, the 95th percentile of every CVE it scores.
How do I fix CVE-2026-83549?
Patch to the fixed version the vendor names, today if the product faces the internet. Until it is patched, take the affected service off the internet or put it behind a VPN or allow-list. Look for signs it was already used: new accounts, web shells, unexpected processes and outbound connections since the date it was listed.
Other SonicWall vulnerabilities being exploited
| CVE | Product | Type | Listed |
|---|---|---|---|
| CVE-2026-19868 | SonicOS SSLVPN | exploited vulnerability | 6 November 2026 |
| CVE-2026-83548 | SMA1000 Appliances | server-side request forgery | 2 September 2026 |
| CVE-2026-15409 | SMA1000 Appliances | server-side request forgery | 14 July 2026 |
| CVE-2026-15410 | SMA1000 Appliances | command injection | 14 July 2026 |
| CVE-2025-40602 | SMA1000 appliance | privilege escalation | 17 December 2025 |
Sources: CISA Known Exploited Vulnerabilities catalogue (released 10 November 2026) and FIRST EPSS. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 13 November 2026.