Type Vulnerability
A heap-based buffer overflow in Microsoft SQL Server could allow an authorised attacker to elevate privileges over a network.
Microsoft · Privilege escalation
Microsoft SQL Server Elevation of Privilege Vulnerability
CVE-2026-94513
What this means
This is rated high severity (8 out of 10). There is no confirmed exploitation of it yet. Ask IT whether the affected products are in your estate.
Full vendor description
Heap-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges over a network.
Scoring and exploitation
8.0/ 10
CVSS 3.1 base scoreHigh
Exploitable over the network with an administrator-level account, under specific conditions, and no one has to click or open anything. High impact on confidentiality, integrity and availability, and it can reach beyond the vulnerable system.
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityHighAC:H
Privileges requiredHighPR:H
User interactionNoneUI:N
ScopeChangedS:C
Impact
Longer bar: more harm
ConfidentialityHighC:H
IntegrityHighI:H
AvailabilityHighA:H
- Not reported
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-122
References
1 link from the CVE record, grouped by site.
msrc.microsoft.com1 link