CVE-2026-78456

EUVD-2026-73809
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 59.73%
Affected Products (NVD)
VendorProductVersion
microsoftsql_server_2022
𝑥
< 16.0.1200.5
microsoftsql_server_2022
16.0.4003.1 ≤
𝑥
< 16.0.4275.2
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78456