What is CVE-2023-21568?

CVE-2023-21568 is a high-severity vulnerability in Microsoft SQL Server 2019 Integration Services, classified under Deserialization of Untrusted Data. CVSS score: 7.3/10. Published 2023-02-14.

How severe is CVE-2023-21568?

High severity. CVSS v3 base score is 7.3 out of 10.

Deserialization in Microsoft SQL Server 2019 Integration Services

CVE-2023-21568

Microsoft SQL Server Integration Service (VS extension) Remote Code Execution Vulnerability

Vulnerability class: Insecure Deserialization

Published 2023-02-14 · last modified 2026-08-19.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (59.1th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Microsoft SQL Server 2019 Integration Services
Microsoft SQL Server 2022 Integration Services
Microsoft SQL Server Integration Services For Visual Studio 2019 — versions 16.0.0
Microsoft SQL Server Integration Services For Visual Studio 2022 — versions 16.0.0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21568 (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-21568?: CVE-2023-21568 is a high-severity vulnerability in Microsoft SQL Server 2019 Integration Services, classified under Deserialization of Untrusted Data. CVSS score: 7.3/10. Published 2023-02-14.
How severe is CVE-2023-21568?: High severity. CVSS v3 base score is 7.3 out of 10.