CVE-2026-67641
Microsoft SQL Server Denial of Service Vulnerability
Integer overflow or wraparound in SQL Server allows an authorized attacker to deny service over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Microsoft SQL Server Denial of Service Vulnerability
Integer overflow or wraparound in SQL Server allows an authorized attacker to deny service over a network.
- Record
CVE-2026-67641- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Weakness
- CWE-190
- Updated
- 2026-11-02
EUVDEUVD-2026-73388
Integer overflow or wraparound in SQL Server allows an authorized attacker to deny service over a network.
- Record
EUVD-2026-73388- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-m563-v4rr-6f2j
Integer overflow or wraparound in SQL Server allows an authorized attacker to deny service over a...
Integer overflow or wraparound in SQL Server allows an authorized attacker to deny service over a network.
- Record
GHSA-m563-v4rr-6f2j- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
NVD
Integer overflow or wraparound in SQL Server allows an authorized attacker to deny service over a network.
- Record
CVE-2026-67641- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-67641 is a medium vulnerability (CVSS 6.5) in Microsoft Sql Server 2022 (cu 26), published September 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.14%, the 66th percentile. No source names a fixed version.