CVE-2026-77480
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk44th percentile - higher than 44% of all known CVEs
Summary
SQL Server has insufficient granularity of access control that allows an authorized attacker to elevate privileges over a network.
Risk Assessment
An authorized user could gain higher privileges than intended, potentially leading to unauthorized access to data or functions.
Recommendation
Adjust access permissions in SQL Server and apply security patches.
Other vulnerabilities in SQL Server
See all- CVE-2026-67636Critical
An out-of-bounds read in SQL Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-67378Critical
An untrusted pointer dereference in SQL Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-65669Critical
Improper neutralization of special elements in output used by a downstream component ('injection') in SQL Server allows an unauthorized attacker to elevate privileges over a network.
- 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-2026-96956High
Stack-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges over a network.
- CVE-2026-94520Medium
Use of externally-controlled format string in SQL Server allows an authorized attacker to deny service over a network. An attacker could exploit this to disrupt service availability.
- CVE-2026-88089Medium
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code locally. An attacker could exploit this to run arbitrary code in the context of the SQL Server process.
- CVE-2026-88086Medium
Out-of-bounds read in SQL Server allows an unauthorized attacker to disclose information over an adjacent network. An attacker could exploit this to access sensitive data.
- CVE-2026-88085Medium
Heap-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges locally. The vulnerability resides in the database component and requires prior access to the system.
Original NVD description (English source)
Insufficient granularity of access control in SQL Server allows an authorized attacker to elevate privileges over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

