CVE-2026-83549: SonicWall SMA1000 Appliances OS Command Injection Vulnerability
What it is
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.
What to do
Schedule the vendor fix into this week’s change window, prioritising internet-facing and business-critical systems. Confirm the fix is applied everywhere, not just where it was easy.
- Priority
- This week: Schedule into this week’s change window.
- Severity (CVSS)
- 7.8 high
- CISA assessment (SSVC)
- actively exploited; needs manual effort per target; total control of the affected system
- Exploit probability (EPSS, 30 days)
- 9.9%, higher than 95% of all CVEs
- Added to CISA KEV
- 2 September 2026
- CISA fix-by date
- 5 September 2026 (US federal agencies; a sensible deadline for everyone)
- Ransomware use
- Not known
- Weakness
- CWE-78
References
- NIST NVD entry
- CISA KEV entry
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0016
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-83549
Sources: CISA Known Exploited Vulnerabilities · FIRST Exploit Prediction Scoring System (EPSS) · NIST National Vulnerability Database · CISA Vulnrichment (SSVC), via the CVE Program. This product uses data from the NVD API but is not endorsed or certified by the NVD. Summaries are machine-written from CISA’s description; treat the vendor’s advisory as the authority for fixes.