SonicWall SMA1000 Appliances Deserialization
CVE-2025-23006 is a critical-severity deserialization of untrusted data vulnerability in SMA1000 from SonicWall, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected SMA1000 versions: 12.4.3-02804 (platform-hotfix) and earlier versions.. The record does not name a fixed version, so check the vendor advisory. CISA added it to the Known Exploited Vulnerabilities catalogue on January 24, 2025, which means attacks have been observed in the wild, including in ransomware campaigns.
Attackers are already exploiting this vulnerability, according to CISA.
What to do
- Update Sma8200v to 12.4.3-02854 or a later version.
- Update Sma6200 Firmware to 12.4.3-02854 or a later version.
- Update Sma6210 Firmware to 12.4.3-02854 or a later version.
- CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Read the advisory on psirt.global.sonicwall.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| SonicWall | SMA1000 | 12.4.3-02804 (platform-hotfix) and earlier versions. | Not stated |
| SonicWall | Sma8200v | before 12.4.3-02854 | 12.4.3-02854 |
| SonicWall | Sma6200 Firmware | before 12.4.3-02854 | 12.4.3-02854 |
| SonicWall | Sma6210 Firmware | before 12.4.3-02854 | 12.4.3-02854 |
| SonicWall | Sma7200 Firmware | before 12.4.3-02854 | 12.4.3-02854 |
| SonicWall | Sma7210 Firmware | before 12.4.3-02854 | 12.4.3-02854 |
| SonicWall | Sra Ex6000 Firmware | 12.4.3-02804 and earlier | Not stated |
| SonicWall | Sra Ex7000 Firmware | 12.4.3-02804 and earlier | Not stated |
| SonicWall | Sra Ex9000 Firmware | 12.4.3-02804 and earlier | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 9.8 | Critical | NVD |
| CVSS 3.1 | 9.8 | Critical | CISA (ADP) |
Official description
Pre-authentication deserialization of untrusted data vulnerability has been identified in the SMA1000 Appliance Management Console (AMC) and Central Management Console (CMC), which in specific conditions could potentially enable a remote unauthenticated attacker to execute arbitrary OS commands.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
How developers prevent this class of flaw
- If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
- When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
- Explicitly define a final object() to prevent deserialization.
More Deserialization of Untrusted Data vulnerabilities (CWE-502)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: active, automatable: yes, technical impact: total).
- Added to CISA's Known Exploited Vulnerabilities catalogue.
- Deadline for US federal agencies to remediate, set by CISA.
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-23006US Government Resource
Other vulnerabilities in SMA1000
- 7.2 High severity
- 7.8 High severity
- 10.0 Critical severity
- 7.8 High severity
- 10.0 Critical severity
- 7.2 High severity
Recent Deserialization of Untrusted Data vulnerabilities
- 9.8 Critical severity
- 8.8 High severity
- 8.8 High severity
- 9.8 Critical severity
- 7.2 High severity
- 7.2 High severity
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