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CVE record · CVE-2020-0618

Deserialization of untrusted data in Microsoft SQL Server and others

CVSS 9.8 CriticalCriticalIn CISA KEV · ransomwareEPSS 0.99 · 99th percentile

Critical, because:

  • In CISA’s KEV catalogue since 18 Sept 2024: it is known to be exploited.
  • CVSS score 9.8: 9.0 or more.
  • CVSS score 9.8 (7.0 or more) and EPSS 0.99 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

How we decide what’s critical

Published by the CVE Program (CNA: microsoft) at 11 Feb 2020, 21:22 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Microsoft Microsoft SQL Server
  • affected 2012 for 32-bit Systems Service Pack 4 (QFE)
  • affected 2012 for x64-based Systems Service Pack 4 (QFE)
  • affected 2016 for x64-based Systems Service Pack 2 (CU)
Microsoft Microsoft SQL Server 2014 Service Pack 3 for x64-based Systems (GDR)
  • affected unspecified
Microsoft Microsoft SQL Server 2014 Service Pack 3 for x64-based Systems (CU)
  • affected unspecified
Microsoft Microsoft SQL Server 2016 for x64-based Systems Service Pack 2 (GDR)
  • affected unspecified
Microsoft Microsoft SQL Server 2014 Service Pack 3 for 32-bit Systems (GDR)
  • affected unspecified
Microsoft Microsoft SQL Server 2014 Service Pack 3 for 32-bit Systems (CU)
  • affected unspecified
Identifiers
CVE-2020-0618
CNA
microsoft
Weakness (CWE)
CWE-502
Tags
Published
11 Feb 2020
Updated
15 Aug 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H ADP (CISA-ADP)
  • CISA KEV Listed since 18 Sept 2024: known to be exploited. CISA reports use in ransomware campaigns.
  • EPSS 0.99, the 99th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 11 Feb 2020. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.