CVE-2026-67633
Microsoft SQL Server Denial of Service Vulnerability
MEDIUM
6.5
CVSS Score
Published: September 8, 2026 at 05:10 PM UTC
Updated: October 27, 2026 at 12:26 AM UTC
4 products affected across 1 vendorSQL Server 2019SQL Server 2022SQL Server 2017
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Severity
MEDIUM6.5
Exploit prediction
EPSS 1%
SSVC
No known exploit
Description
Out-of-bounds read in SQL Server allows an authorized attacker to deny service over a network.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 14.0.2130.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 14.0.3550.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.2190.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.4490.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.1200.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.4275.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 17.0.1135.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 17.0.4085.5, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67633SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusANALYZED
CWE
CWE-125
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