CVEs / CVE-2026-83548
CVE-2026-83548: SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability
- Known exploited in the CISA KEV catalog since 2 Sep 2026
- critical 10 CVSS 3.1 (from the CNA)
- EPSS 8.04% chance of exploitation in the next 30 days, higher than 94% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
SonicWall SMA1000 Appliances contains a server-side request forgery vulnerability that could allow a remote unauthenticated attacker to gain unauthorized access to sensitive functionality and perform unauthorized operations.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| SonicWall SMA1000 | 12.4.3-03453 (platform-hotfix) and older versions | — |
| SonicWall SMA1000 | 12.5.0-02835 (platform-hotfix) and older versions | — |
Exploitation
| In CISA KEV since | 2 Sep 2026 |
|---|---|
| Due date for US federal agencies | 5 Sep 2026 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 3.1 | 10 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HScored by the CNA (134c704f-9b21-4f2e-91b3-4a467353bcc0) |
|---|---|
| Weakness | CWE-441, CWE-918 |
References
- CVE-2026-83548 on NVD
- CVE-2026-83548 in the CISA KEV catalog
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0016 (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (cited by CISA)
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0016 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-83548 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.