CVE-2026-21262
HighCVSS 8.8Exploitation Probability (EPSS)
High risk79th percentile - higher than 79% of all known CVEs
Summary
A vulnerability in SQL Server allows an authorized attacker to elevate privileges over a network due to improper access control.
Risk Assessment
An attacker could gain higher privileges in the system, potentially leading to unauthorized data access or server compromise.
Recommendation
Apply the security update provided by the vendor immediately and restrict network access to SQL Server to trusted hosts only.
Other vulnerabilities in SQL Server
See all- CVE-2026-54118Critical
A vulnerability in SQL Server allows an unauthorized attacker to execute code over a network through deserialization of untrusted data.
- CVE-2026-54117Critical
A vulnerability in SQL Server allows an unauthorized attacker to execute code over a network through deserialization of untrusted data.
- CVE-2026-54116Medium
Access of resource using incompatible type ('type confusion') in SQL Server allows an authenticated attacker to disclose information over a network.
- CVE-2026-50468Medium
A buffer over-read in SQL Server allows an authorized attacker to disclose information over a network.
- CVE-2026-47295High
An SQL injection vulnerability in SQL Server. Improper neutralization of special elements used in an SQL command allows an authorized attacker to elevate privileges over a network.
- CVE-2026-55002High
A vulnerability in SQL Server allows an authorized attacker to elevate privileges over a network via external control of file name or path.
- CVE-2026-47296High
A vulnerability in SQL Server due to improper neutralization of special elements in SQL commands (SQL injection) allows an authorized attacker to elevate privileges over a network.
- CVE-2026-40370High
External control of file name or path in SQL Server allows an authorized attacker to execute code over a network.
- CVE-2026-33120High
An untrusted pointer dereference vulnerability in SQL Server allows an authorized attacker to execute code over a network.
- CVE-2026-20803High
Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.
Original NVD description (English source)
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.