CVE Tools
Track your stack

CVE-2026-67641

Microsoft SQL Server Denial of Service Vulnerability

No known exploitation. EPSS puts it in the 67th percentile. Fixed versions are out.

CVSS 3.16.5MediumEPSS percentile67th1.1% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix5 products4 fixed builds listed below
Check it yourself

OpenVAS · 4 checks

e.g. OID 1.3.6.1.4.1.25623.1.3.3.12147.0.5122771.4954464846495048484653

Run the check

Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Microsoft SQL Server 2022Affected: ≥ 16.0.0.0, < 16.0.4275.2Upgrade to: 16.0.4275.2Stated by: CVE record
  • Microsoft SQL Server 2022Affected: ≥ 16.0.0, < 16.0.1200.5Upgrade to: 16.0.1200.5Stated by: CVE record
  • Microsoft SQL Server 2025Affected: ≥ 17.0.0.0, < 17.0.4085.5Upgrade to: 17.0.4085.5Stated by: CVE record
  • Microsoft SQL Server 2025 for x64-based SystemsAffected: ≥ 17.0.1050.2, < 17.0.1135.8Upgrade to: 17.0.1135.8Stated by: CVE record
  • Microsoft Sql Server 2022Affected: < 16.0.1200.5Upgrade to: 16.0.1200.5Stated by: NVD

Versions as the sources state them. 1 more product has version data. Full version matrix after sign-in

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

Integer overflow or wraparound in SQL Server allows an authorized attacker to deny service over a network.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS67th
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

1.1% chance of exploitation activity in the next 30 days, which ranks it in the 67th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

8 events over 7 days, from the signal feeds we watch.

  1. Patch availablerecord updated
  2. OpenVAS check added
  3. Publishedweakness classified, att&ck mapped, record updated, record updated

Affected products

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Scored 6.5 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required LowRequires basic user-level privileges
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality NoneNo confidentiality impact
  • Integrity NoneNo integrity impact
  • Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

In the news

Watch the software you run.

My Stack ranks new CVEs for your products by real-world exploitation, so the next serious one reaches you without reading every advisory.

We'll flag the next CVE, public exploit or patch for Microsoft, not every advisory.