Source: Microsoft · Limited verification•Last verified: •Collection Degraded
CVE-2026-88089Unknown / EvaluatingImportant (raw)CVSS 6.7CWE-20
Microsoft SQL Server Remote Code Execution Vulnerability
Published: 13 Oct 2026•Last updated: 13 Oct 2026, 12:30 PM IST•Source identifier: secure@microsoft.com
Dossier completeness: source-provided sections 3 / 3 · rule guidance not available. Missing source facts count as incomplete.
CISA KEV catalog
Unknown
KEV status was not determined.
CVSS score
6.7Important (raw)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Metric sourceMicrosoft MSRC CVRF
EPSS probability
0.2%0.002
Percentile14th
Weakness type
CWE-20
CWE-122
Remediation
Patch status unknown
KB5128496, KB5128494, KB5128492, KB5128497, KB5128495, KB5126934, KB5126967, KB5128493
Why It Matters
Analysis dossierWhy It Matters
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code locally.
SOC priority
Medium
Actively exploited
No
Publicly disclosed
Unknown
Risk basis: Microsoft or Microsoft-managed product relevance; No confirmed exploitation signal in current enrichment
Affected Products & Remediation
9 source-backed productsAffected products and versions (source)
- Microsoft SQL Server 2017 for x64-based Systems (CU31) · version range not provided by source · Microsoft MSRC · Source
- Microsoft SQL Server 2019 for x64-based Systems (CU32) · version range not provided by source · Microsoft MSRC · Source
- Microsoft SQL Server 2025 for x64-based Systems (CU8) · version range not provided by source · Microsoft MSRC · Source
- Microsoft SQL Server 2025 for x64-based Systems (GDR) · version range not provided by source · Microsoft MSRC · Source
- Microsoft SQL Server 2017 for x64-based Systems (GDR) · version range not provided by source · Microsoft MSRC · Source
- Microsoft SQL Server 2019 for x64-based Systems (GDR) · version range not provided by source · Microsoft MSRC · Source
- Microsoft SQL Server 2022 for x64-based Systems (CU27) · version range not provided by source · Microsoft MSRC · Source
- Microsoft SQL Server 2025 for x64-based Systems (CU9) · version range not provided by source · Microsoft MSRC · Source
- Microsoft SQL Server 2022 for x64-based Systems (GDR) · version range not provided by source · Microsoft MSRC · Source
Recorded patch / KBKB5128496, KB5128494, KB5128492, KB5128497, KB5128495, KB5126934, KB5126967, KB5128493
Vendor or catalog guidance (source)
- Microsoft MSRC: Install the security update KB5128496 listed by MSRC
- Microsoft MSRC: Install the security update KB5128494 listed by MSRC
- Microsoft MSRC: Install the security update KB5128492 listed by MSRC
- Microsoft MSRC: Install the security update KB5128497 listed by MSRC
- Microsoft MSRC: Install the security update KB5128495 listed by MSRC
Known exploitation (source facts)
Only what a source states. Unknown means no source has said either way; it is not "not exploited".
- CISA KEV
- Unknown
- Exploited (source statement)
- No
- Publicly disclosed (source)
- Unknown
Suggested hunting (rule-based inference)
SecOps Signal recommendation (rule-based inference). These steps are hunting hypotheses from the vulnerability class; they do not state or imply that exploitation occurred here or anywhere.
No rule-based guidance for this vulnerability class
CISA KEV Record
CISA KEV status was not determined for this record.
Change History & Source Data
— No recorded material change
- CNA / source
- secure@microsoft.com
- Record status · verification
- UPDATED · Unknown
- CPE
- Unknown
Evidence & Provenance
Detection Hunting Query
— No published hunting query names this record. Browse community and library queries instead.
Correlated briefings
SecOps Signal surfaces public advisory facts only. A missing value means the source has not published it, not that your environment is unaffected. No tenant inventory is connected.