CVEs / CVE-2026-83549
CVE-2026-83549: SonicWall SMA1000 Appliances OS Command Injection Vulnerability
- Known exploited in the CISA KEV catalog since 2 Sep 2026
- high 7.8 CVSS 3.1 (from the CNA)
- EPSS 9.88% chance of exploitation in the next 30 days, higher than 95% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
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.
Description
Post-authentication Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability has been identified in the SMA1000 Appliance Management Console (AMC) which in specific conditions could potentially enable a remote authenticated attacker as administrator to execute arbitrary OS commands, resulting in remote code execution.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| SonicWall SMA1000 | 12.4.3-03453 (platform-hotfix) and older versions | — |
| SonicWall SMA1000 | 12.5.0-02835 (platform-hotfix) and older versions | — |
Exploitation
| In CISA KEV since | 2 Sep 2026 |
|---|---|
| Due date for US federal agencies | 5 Sep 2026 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by the CNA (134c704f-9b21-4f2e-91b3-4a467353bcc0) |
|---|---|
| Weakness | CWE-78 |
References
- CVE-2026-83549 on NVD
- CVE-2026-83549 in the CISA KEV catalog
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0016 (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (cited by CISA)
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0016 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-83549 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.