8.8
High
CVE-2026-77484 Deserialization of untrusted data in SQL Server allows an authorized attacker to execute code over a network
Description
Deserialization of untrusted data in SQL Server allows an authorized attacker to execute code over a network.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft SQL Server 2019 (CU 32) 15.0 | 15.0.0.0 → < 15.0.4490.9 | 15.0.4490.9 |
| Microsoft SQL Server 2019 (GDR) 15.0 | 15.0.0 → < 15.0.2190.7 | 15.0.2190.7 |
| Microsoft SQL Server 2022 (CU 26) 16.0 | 16.0.0.0 → < 16.0.4275.2 | 16.0.4275.2 |
| Microsoft SQL Server 2022 (GDR) 16.0 | 16.0.0 → < 16.0.1200.5 | 16.0.1200.5 |
| Microsoft SQL Server 2025 (CU8) 17.0 | 17.0.0.0 → < 17.0.4085.5 | 17.0.4085.5 |
| Microsoft SQL Server 2025 for x64-based Systems (GDR) 17.0 | 17.0.1050.2 → < 17.0.1135.8 | 17.0.1135.8 |
Other CVEs of Microsoft SQL Server 2019 (CU 32)
The 71 CVEs of Microsoft SQL Server 2019 (CU 32) →
CVE-2026-77481
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network
8.8
High
CVE-2026-67645
Out-of-bounds read in SQL Server allows an authorized attacker to disclose information over a network
6.5
Medium
CVE-2026-67624
Out-of-bounds read in SQL Server allows an authorized attacker to disclose information over a network
6.5
Medium
CVE-2026-66819
Improper neutralization of special elements used in an sql command ('sql injection') in SQL Server allows an…
8.8
High