Deserialization of Untrusted Data in Microsoft SQL Server - CVE-2026-47297
Published: September 9, 2026
Vulnerability identifier: #VU148361
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-47297
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to deserialization of untrusted data in SQL Server deserialization functionality when processing untrusted serialized data. A remote attacker can send specially crafted serialized data to execute arbitrary code.
Exploitation requires specific protocol settings or configurations.
Affected software
Microsoft SQL Server
How to mitigate CVE-2026-47297
Install security update from vendor's website.
Microsoft SQL Server - addressed in versions 15.0.2190.7, 15.0.4490.9, 16.0.1200.5, 16.0.4275.2, 17.0.1135.8, 17.0.4085.5