CVE-2025-32820
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA vulnerability in SMA100 allows a remote authenticated attacker with SSLVPN user privileges can inject a path traversal sequence to make any directory on the SMA appliance writable.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA path traversal vulnerability in SMA100 series SSL VPN appliances allows any authenticated SSLVPN user to inject traversal sequences (e.g., ../../../) to make arbitrary directories on the appliance file system writable. This elevation of privilege from standard VPN user to root-equivalent file system access enables attackers to drop web shells, modify configuration, or persist malware.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 10.2.1.15-81sv< 10.2.1.15-81sv< 10.2.1.15-81sv< 10.2.1.15-81sv< 10.2.1.15-81sv< 10.2.1.15-81svCVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify SMA100 series appliance modelAccess the appliance web UI or CLI and locate the device model information, typically found under System > Status or in the device label/console outputAffected if The model is one of: SMA 200, SMA 210, SMA 400, SMA 410, or SMA 500v
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Check installed firmware versionNavigate to System > Status in the SMA web interface or run 'show version' via CLI. Compare the firmware version against the fixed version 10.2.1.15-81svAffected if The installed firmware version is lower than 10.2.1.15-81sv (e.g., 10.2.1.12-79sv, 10.1.x.x, etc.)
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Verify SSLVPN service is enabledCheck the appliance configuration under Users > SSLVPN Settings or VPN > SSLVPN to confirm the SSLVPN service is active and user authentication is configuredAffected if SSLVPN is enabled and user accounts exist for VPN access (the vulnerability requires an authenticated SSLVPN user)
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Inspect system directories for unexpected filesUse CLI or an administrative file audit to examine directories such as /www, /tmp, /var, or the webroot for newly created or modified files, especially web shells (.php, .jsp, .asp) or scriptsAffected if Arbitrary files exist in system directories that were not placed there by administrators, indicating potential exploitation
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Review user accounts and privilege assignmentsCheck Users > Local Users or the authentication logs for any unexpected user accounts or privilege escalations that may indicate an attacker created persistenceAffected if Unexpected local users exist or standard VPN users have elevated permissions they should not have
A defender is affected if they run an SMA 100 series appliance (200/210/400/410/500v) with firmware below 10.2.1.15-81sv and have SSLVPN enabled with user accounts, as the vulnerability allows any authenticated VPN user to gain root-equivalent file system access.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped10.2.1.15-81sv
Apply vendor patch when available; in interim, restrict SSLVPN user account creation, implement WAF rules blocking directory traversal patterns (../, ..\), and monitor for unauthorized file creation in system directories.
SMA 100/200/210/400/410/500v Firmware version 10.2.1.15-81sv or later
- Log into the SMA appliance administrative web interface with admin credentials
- Navigate to the System Administration or Firmware Management section
- Download the fixed firmware version 10.2.1.15-81sv (or later) from the official SonicWall support portal at support.sonicwall.com
- Backup the current device configuration from the System > Settings > Backup/Restore page
- Upload the firmware file and initiate the upgrade process
- Allow the device to reboot and complete the firmware installation
- After reboot, verify the new firmware version is 10.2.1.15-81sv or higher in the System Status or About page
- Confirm the vulnerability is resolved by verifying path traversal is no longer possible
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-32820 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-32820 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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