CVE-2026-83548: SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability
Vulnerability summary
CVE-2026-83548 is a critical (CVSS 10.0) Confused Deputy vulnerability in SonicWall SMA1000 Appliances. It is known to be exploited: CISA lists it, first on 02-09-2026. EPSS estimates a 8.04% chance of exploitation in the next 30 days, higher than 94.7% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 01-09-2026PublishedVulnerability first disclosed.
- 02-09-2026Added to CISA KEVSonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability
- 03-09-2026Last modifiedVulnerability information updated.
- 05-09-2026CISA remediation dueApply mitigations per vendor instructions.
Description
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.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST10.0CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS trend
Probability
8.04%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
+3.38 pp
From 4.67% on 18-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 02-09-2026
- Federal due date
- 05-09-2026
CISA 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. psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0016 nvd.nist.gov/vuln/detail/CVE-2026-83548
Public exploits
1 foundSonicWall SMA1000 WorkPlace SSRF to Root Remote Code Execution
exploit/linux/http/sonicwall_sma1000_couchdb_rce
Maturity: weaponized
Weaknesses
CWE · root cause- CWE-441Unintended Proxy or Intermediary ('Confused Deputy')The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere. This causes the product to appear to be the source of the request, leading it to act as a proxy or other intermediary between the upstream component and the external actor.
- CWE-918Server-Side Request Forgery (SSRF)The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
Affected systems
Sonicwall4 products
- sma1000_firmware12.4.3-03453 (platform-hotfix) and older versions | 12.5.0-02835 (platform-hotfix) and older versions
- sma6210_firmware< 12.4.3-03526 | ≥ 12.5.0, < 12.5.0-02952
- sma7210_firmware< 12.4.3-03526 | ≥ 12.5.0, < 12.5.0-02952
- sma8200v< 12.4.3-03526 | ≥ 12.5.0, < 12.5.0-02952
1 vendor · 4 products
References
2 links- psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0016Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-83548Government ResourceUS Government Resource