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CVE-2026-83548 – Pre-Auth SSRF (Chained to RCE) – SonicWall SMA1000

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Summary

CVE-2026-83548 is a critical, pre-authentication Server-Side Request Forgery (SSRF) vulnerability in the Work Place interface of SonicWall SMA1000 secure remote access appliances. An unauthenticated remote attacker can abuse the appliance as an unintended proxy to reach sensitive internal functionality and perform unauthorized operations. SonicWall rates the flaw 10.0 (Critical) and has confirmed active exploitation in the wild.

Technical details

  • Root cause: the Work Place interface exposes an unintended alternate access route that allows the appliance to act as an unintended forward proxy (confused-deputy condition).
  • Trigger: no authentication or user interaction is required to reach the vulnerable functionality.
  • Attack vector: network-based, low attack complexity, exploitable pre-authentication.
  • Impact: unauthorized access to sensitive functionality and unauthorized operations; SonicWall and researchers note this SSRF can be chained with the companion OS command injection flaw CVE-2026-83549 (Appliance Management Console) for unauthenticated remote code execution.
  • Classified as CWE-918 (Server-Side Request Forgery) and CWE-441 (Unintended Proxy or Intermediary / "Confused Deputy").

Affected software

  • SonicWall SMA1000 (Linux platform), models 6210, 7210, and 8200v
  • Versions 12.4.3-03453 (platform-hotfix) and earlier
  • Versions 12.5.0-02835 (platform-hotfix) and earlier
  • SonicWall SSL-VPN on firewalls and SMA100 series products are not affected

Severity

  • CVSS v3.1 Base Score: 10.0 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Upgrade SMA1000 to hotfix 12.4.3-03526, 12.5.0-02952, or later, which SonicWall confirms remediates this issue.
  • If patching cannot be applied immediately: restrict and monitor access to the Work Place interface, review appliance logs for signs of unauthorized proxying/SSRF activity, and treat any suspected compromise as a full incident (SonicWall PSIRT has confirmed active exploitation) — including credential/MFA reset and re-imaging where compromise is suspected.
  • Given confirmed in-the-wild exploitation, prioritize patching over other remediation timelines and monitor SonicWall PSIRT and CISA KEV for updates.

References

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