CVE-2026-0206: A post-authentication Stack-based Buffer Overflow vulnerabilities in SonicOS allows a remote attacker to crash a firewall.

CVE-2026-0206 · Severity: medium · CVSS 4.9 · Published 2026-04-29

A post-authentication Stack-based Buffer Overflow vulnerabilities in SonicOS allows a remote attacker to crash a firewall.

Technologies: SonicWall Nsa 2650, SonicWall Nsa 2700, SonicWall Nsa 2800, SonicWall Nsa 3600, SonicWall Nsa 3650, SonicWall Nsa 3700, SonicWall Nsa 3800, SonicWall Nsa 4600, SonicWall Nsa 4650, SonicWall Nsa 4700, SonicWall Nsa 4800, SonicWall Nsa 5600, SonicWall Nsa 5650, SonicWall Nsa 5700, SonicWall Nsa 5800, SonicWall Nsa 6600, SonicWall Nsa 6650, SonicWall Nsa 6700, SonicWall Nssp 10700, SonicWall Nssp 11700, SonicWall Nssp 13700, SonicWall Nssp 15700, SonicWall Nsv 270, SonicWall Nsv 470, SonicWall Nsv 870, SonicWall Sm 9200, SonicWall Sm 9250, SonicWall Sm 9400, SonicWall Sm 9450, SonicWall Sm 9600, SonicWall Sm 9650, SonicWall Soho 250, SonicWall Soho 250w, SonicWall Sohow, SonicWall SonicOS, SonicWall Tz 300, SonicWall Tz 300p, SonicWall Tz 300w, SonicWall Tz 350, SonicWall Tz 350w, SonicWall Tz 400, SonicWall Tz 400w, SonicWall Tz 500, SonicWall Tz 500w, SonicWall Tz 600, SonicWall Tz 600p, SonicWall Tz270, SonicWall Tz270w, SonicWall Tz280, SonicWall Tz280w, SonicWall Tz370, SonicWall Tz370w, SonicWall Tz380, SonicWall Tz380w, SonicWall Tz470, SonicWall Tz470w, SonicWall Tz480, SonicWall Tz570, SonicWall Tz570p, SonicWall Tz570w, SonicWall Tz580, SonicWall Tz670, SonicWall Tz680, SonicWall Tz80. Vendors: SonicWall.

Quick answers

Is CVE-2026-0206 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-0206 being exploited in the wild.
How severe is CVE-2026-0206?
Medium severity, with a CVSS score of 4.9, published 29 April 2026.
Which products and versions are affected?
SonicWall Nsa 2650, SonicWall Nsa 2700, SonicWall Nsa 2800, SonicWall Nsa 3600 and 60 more. The advisory does not name versions.
Is there a fix for CVE-2026-0206?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-0206?
Check whether you run SonicWall Nsa 2650, SonicWall Nsa 2700, SonicWall Nsa 2800 or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • SonicWall Nsa 2650
  • SonicWall Nsa 2700
  • SonicWall Nsa 2800
  • SonicWall Nsa 3600
  • SonicWall Nsa 3650
  • SonicWall Nsa 3700
  • SonicWall Nsa 3800
  • SonicWall Nsa 4600
  • SonicWall Nsa 4650
  • SonicWall Nsa 4700
  • SonicWall Nsa 4800
  • SonicWall Nsa 5600
  • SonicWall Nsa 5650
  • SonicWall Nsa 5700
  • SonicWall Nsa 5800
  • SonicWall Nsa 6600
  • SonicWall Nsa 6650
  • SonicWall Nsa 6700
  • SonicWall Nssp 10700
  • SonicWall Nssp 11700
  • SonicWall Nssp 13700
  • SonicWall Nssp 15700
  • SonicWall Nsv 270
  • SonicWall Nsv 470
  • SonicWall Nsv 870
  • SonicWall Sm 9200
  • SonicWall Sm 9250
  • SonicWall Sm 9400
  • SonicWall Sm 9450
  • SonicWall Sm 9600
  • SonicWall Sm 9650
  • SonicWall Soho 250
  • SonicWall Soho 250w
  • SonicWall Sohow
  • SonicWall SonicOS
  • SonicWall Tz 300
  • SonicWall Tz 300p
  • SonicWall Tz 300w
  • SonicWall Tz 350
  • SonicWall Tz 350w
  • SonicWall Tz 400
  • SonicWall Tz 400w
  • SonicWall Tz 500
  • SonicWall Tz 500w
  • SonicWall Tz 600
  • SonicWall Tz 600p
  • SonicWall Tz270
  • SonicWall Tz270w
  • SonicWall Tz280
  • SonicWall Tz280w
  • SonicWall Tz370
  • SonicWall Tz370w
  • SonicWall Tz380
  • SonicWall Tz380w
  • SonicWall Tz470
  • SonicWall Tz470w
  • SonicWall Tz480
  • SonicWall Tz570
  • SonicWall Tz570p
  • SonicWall Tz570w
  • SonicWall Tz580
  • SonicWall Tz670
  • SonicWall Tz680
  • SonicWall Tz80

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