Full Report
SonicWall has released patches to address three security flaws affecting SMA 100 Secure Mobile Access (SMA) appliances that could be fashioned to result in remote code execution. The vulnerabilities are listed below - CVE-2025-32819 (CVSS score: 8.8) - A vulnerability in SMA100 allows a remote authenticated attacker with SSL-VPN user privileges to bypass the path traversal checks and delete an
Analysis Summary
# Vulnerability: SonicWall SMA 100 Series Arbitrary File Deletion, Path Traversal, and Command Injection Leading to Root RCE
## CVE Details
- CVE ID: CVE-2025-32819, CVE-2025-32820, CVE-2025-32821
- CVSS Score: 8.8 (High) for CVE-2025-32819; 8.3 (High) for CVE-2025-32820; 6.7 (Medium) for CVE-2025-32821
- CWE: Not explicitly listed in the summary, but involves Path Traversal and command injection.
## Affected Systems
- Products: SonicWall SMA 100 Series appliances (including SMA 200, 210, 400, 410, 500v)
- Versions: Versions prior to 10.2.1.15-81sv
- Configurations: Requires specific user privileges (SSL-VPN user or administrator, depending on the flaw).
## Vulnerability Description
Three vulnerabilities affecting SonicWall SMA 100 series appliances can be chained together by an attacker with SSL-VPN user privileges to achieve root-level Remote Code Execution (RCE).
1. **CVE-2025-32819 (Authenticated Path Traversal/Arbitrary File Deletion):** An authenticated SSL-VPN user can bypass path traversal checks to delete an arbitrary file, potentially leading to a device reboot to factory default settings. This is noted as a patch bypass for a previously identified flaw.
2. **CVE-2025-32820 (Authenticated Path Traversal/Arbitrary Directory Writable):** An authenticated SSL-VPN user can inject a path traversal sequence to make any directory on the SMA appliance writable.
3. **CVE-2025-32821 (Authenticated Command Injection):** An authenticated SSL-VPN administrator can inject shell command arguments to upload a file onto the appliance.
**Chained Exploitation:** An attacker can utilize CVE-2025-32819 and CVE-2025-32820 to make a sensitive system directory writable, elevate privileges to SMA administrator, and then use CVE-2025-32821 to upload and execute a file, resulting in root RCE.
## Exploitation
- Status: PoC available (Implied via published research from Rapid7). CVE-2025-32819 may have been exploited in the wild as a zero-day based on IoCs, though SonicWall made no explicit public mention of weaponization.
- Complexity: Low to Medium (Requires chaining multiple steps, but initial access relies on existing authenticated user credentials).
- Attack Vector: Network (Requires existing SSL-VPN authenticated access).
## Impact
- Confidentiality: High (Root RCE allows full system compromise)
- Integrity: High (Root RCE allows modification or destruction of system files)
- Availability: High (Root RCE can lead to device reboot/denial of service via file deletion)
## Remediation
### Patches
- Update to version **10.2.1.15-81sv** or a subsequent fixed release.
### Workarounds
- No specific workarounds are explicitly mentioned in the summary beyond applying the patch. Users should contact SonicWall for potential temporary mitigations if immediate patching is not feasible.
## Detection
- **Indicators of Compromise (IoCs):** Mentioned in relation to CVE-2025-32819 potentially being exploited in the wild; specific IoCs are not detailed in this summary but should be sourced from related vendor/research advisories.
- **Detection Methods and Tools:** Monitor for unusual file deletion attempts or abnormal file uploads targeting system directories, especially by already-authenticated SSL-VPN users.
## References
- Vendor Advisory Link (defanged): psirt[.]global[.]sonicwall[.]com/vuln-detail/SNWLID-2025-0011
- Research Report Link (defanged): www[.]rapid7[.]com/blog/post/2025/05/07/multiple-vulnerabilities-in-sonicwall-sma-100-series-2025/
- Previous Advisory Link (defanged for CVE-2025-32819 context): psirt[.]global[.]sonicwall[.]com/vuln-detail/SNWLID-2021-0026