CVE-2026-18634: CWE-502 Deserialization of untrusted data in SonicWall GMS
An insecure handling of serialized objects vulnerability was found in the one of the service of GMS application 9.5.1 (Build 9510.1044) and earlier versions. A local attacker with the ability to interact with the service could exploit this behavior to perform unauthorized actions through the affected component.
AI Analysis
Technical Summary
This vulnerability, classified under CWE-502 (Deserialization of Untrusted Data), affects SonicWall GMS versions 9.5.1 (Build 9510.1044) and earlier. It arises from insecure processing of serialized objects within one of the GMS services. A local attacker with access to the service interface could exploit this flaw to execute unauthorized actions via crafted serialized data. The vulnerability is published but lacks a CVSS score and no official remediation or patch information is currently available.
Potential Impact
An attacker with local access to the vulnerable GMS service could leverage this vulnerability to perform unauthorized actions, potentially compromising the integrity or behavior of the affected component. The exact impact depends on the nature of the unauthorized actions but could include privilege escalation or unauthorized control within the GMS environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local access to the affected service to trusted users only and monitor for unusual activity related to serialized object handling.
CVE-2026-18634: CWE-502 Deserialization of untrusted data in SonicWall GMS
Description
An insecure handling of serialized objects vulnerability was found in the one of the service of GMS application 9.5.1 (Build 9510.1044) and earlier versions. A local attacker with the ability to interact with the service could exploit this behavior to perform unauthorized actions through the affected component.
CVSS v3.1
Score 8.4high
Affected software
SonicWall
GMS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, classified under CWE-502 (Deserialization of Untrusted Data), affects SonicWall GMS versions 9.5.1 (Build 9510.1044) and earlier. It arises from insecure processing of serialized objects within one of the GMS services. A local attacker with access to the service interface could exploit this flaw to execute unauthorized actions via crafted serialized data. The vulnerability is published but lacks a CVSS score and no official remediation or patch information is currently available.
Potential Impact
An attacker with local access to the vulnerable GMS service could leverage this vulnerability to perform unauthorized actions, potentially compromising the integrity or behavior of the affected component. The exact impact depends on the nature of the unauthorized actions but could include privilege escalation or unauthorized control within the GMS environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local access to the affected service to trusted users only and monitor for unusual activity related to serialized object handling.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- sonicwall
- Date Reserved
- 2026-08-03T10:19:53.152Z
- State
- PUBLISHED
Threat ID: 6a7b858ebf8831d5395e02a2
Added to database: 08/11/2026, 20:26:54 UTC
Last enriched: 08/11/2026, 20:42:52 UTC
Last updated: 09/25/2026, 13:47:43 UTC
Views: 40
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