Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-54118

CVE-2026-54118CRITICAL

Microsoft SQL Server Remote Code Execution Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  H    9.8   .0153   73.9     —

AFFECTED
  Product                                                              Versions       Fixed
  Microsoft SQL Server 2016 Service Pack 3 (GDR)                       13.0.0 –       —
  Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack  13.0.0 –       —
  Microsoft SQL Server 2017 (CU 31)                                    14.0.0 –       —
  Microsoft SQL Server 2017 (GDR)                                      14.0.0 –       —
  Microsoft SQL Server 2019 (CU 32)                                    15.0.0.0 –     —
  Microsoft SQL Server 2019 (GDR)                                      15.0.0 –       —
  Microsoft SQL Server 2022 (GDR)                                      16.0.0 –       —
  Microsoft SQL Server 2022 for x64-based Systems (CU 25)              16.0.4260.1 –  —
  Microsoft SQL Server 2025 (CU 6)                                     17.0.4060.2 –  —
  Microsoft SQL Server 2025 for x64-based Systems (GDR)                17.0.1050.2 –  —

TIMELINE
  Jun 11  Reserved by microsoft
  Jul 14  Published (CNA: microsoft)
  Aug 20  RESCORED — CVE-2026-54118 (Microsoft SQL Server 2016 Service Pack 3 (GDR)). CVSS 8.8 → 9.8 (NVD).

CWE-502 · CNA: microsoft · CVSS v3.1 · 1 reference · NVD status: Modified

Description

Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 11, 2026	Reserved	Reserved by microsoft
July 14, 2026	Published	Published (CNA: microsoft)
August 20, 2026	RESCORED	RESCORED — CVE-2026-54118 (Microsoft SQL Server 2016 Service Pack 3 (GDR)). CVSS 8.8 → 9.8 (NVD).

Affected

Affected products and packages — 10 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Microsoft	Microsoft SQL Server 2016 Service Pack 3 (GDR)	—	13.0.0	—
Microsoft	Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack	—	13.0.0	—
Microsoft	Microsoft SQL Server 2017 (CU 31)	—	14.0.0	—
Microsoft	Microsoft SQL Server 2017 (GDR)	—	14.0.0	—
Microsoft	Microsoft SQL Server 2019 (CU 32)	—	15.0.0.0	—
Microsoft	Microsoft SQL Server 2019 (GDR)	—	15.0.0	—
Microsoft	Microsoft SQL Server 2022 (GDR)	—	16.0.0	—
Microsoft	Microsoft SQL Server 2022 for x64-based Systems (CU 25)	—	16.0.4260.1	—
Microsoft	Microsoft SQL Server 2025 (CU 6)	—	17.0.4060.2	—
Microsoft	Microsoft SQL Server 2025 for x64-based Systems (GDR)	—	17.0.1050.2	—

Weaknesses

CWE-502

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54118 [vendor-advisory, patch]

Authoritative record: CVE-2026-54118 at cve.org

Vendors: microsoft

Weaknesses: CWE-502

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-54118 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.