LOW 3.5 Microsoft
CVE-2025-46686
Redis through 8.0.3 allows memory consumption via a multi-bulk command composed of many bulks, sent by an authenticated user. This occurs because the server allocates memory for the command arguments of every bulk, even when the command is skipped because of insufficient permissions. NOTE: this is disputed by the Supplier because abuse of the commands network protocol is not a violation of the Redis Security Model.
Microsoft Security Update 2026-Aug: Redis through 8.0.3 allows memory consumption via a multi-bulk command composed of many bulks, sent by an authenticated user. This occurs because the server allocates memory for the command arguments of every bulk, even when the command is skipped because of insufficient permissions. NOTE: this is disputed by the Supplier because abuse of the commands network protocol is not a violation of the Redis Security Model.
Affected Products
- cbl2 redis 6.2.18-3
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-46686
- https://nvd.nist.gov/vuln/detail/CVE-2025-46686
This low severity vulnerability with a CVSS score of 3.5 was published on 2026-08-06 via Microsoft. Affected: cbl2 redis 6.2.18-3.
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