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Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2026-83548

SMA1000 Server-Side Request Forgery

SonicWall / SMA1000 · 12.4.3-03453 (platform-hotfix) and older versions

View live feed Monitor via API Watch CVE-2026-83548
Severity
CVSS 10.0 · Critical
Confidence
High
Exploit status
Exploited in the wild
EPSS
—
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-83548 is an unauthenticated vulnerability affecting SonicWall SMA1000. A Pre-authentication SSRF vulnerability exists in the SMA1000 Appliance Work Place interface due to an unintended alternate access path....

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is high. Also confirmed by third-party sources.

Who is affected?

SonicWall / SMA1000 12.4.3-03453 (platform-hotfix) and older versions.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

SMA1000 Server-Side Request Forgery

A Pre-authentication SSRF vulnerability exists in the SMA1000 Appliance Work Place interface due to an unintended alternate access path.

A remote unauthenticated attacker could potentially exploit this vulnerability to gain unauthorized access to sensitive functionality and perform unauthorized operations.

Vendor Product Affected Status
SonicWall SMA1000 12.4.3-03453 (platform-hotfix) and older versions Affected
SonicWall SMA1000 12.5.0-02835 (platform-hotfix) and older versions Affected
View vendor advisory (opens in new tab)
Published
01 Sep 2026
Exploitation Reported
01 Sep 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

edge

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

Sonicwall PSIRT

Recorded 01 Sep 2026

Independent exploitation attestation added to the Previdian record.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

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Source Added
Sonicwall PSIRT First 2026-09-01 20:19 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
0
User-Agents
0

Raw values available in Pro and Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v3.0

10.0 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS

—

Weaknesses

Unintended Proxy or Intermediary ('Confused Deputy') CWE-441 Server-Side Request Forgery (SSRF) CWE-918

Recent mention · Sonicwall PSIRT

SonicWall SMA1000 Series Appliances Affected By Multiple Vulnerabilities

1) CVE-2026-83548 - Pre-authentication SSRF via unintended forward-proxy A Pre-authentication SSRF vulnerability exists in the SMA1000 Appliance Work Place interface due to an unintended alternate access path. A remote unauthenticated attacker could potentially exploit this...

Read full advisory

Timeline

From disclosure to observed exploitation

  1. CVE published

    Vulnerability disclosed publicly

  2. Added to the Previdian watchlist

    Added to the Previdian curated list for closer monitoring

  3. Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  4. CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-83548

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2026-83548",
  "confidence": "High",
  "cvss_score": 10.0,
  "cvss_estimated": false,
  "epss_score": null,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}