CVE-2023-21705
HighCVSS 8.8Exploitation Probability (EPSS)
Elevated risk66th percentile - higher than 66% of all known CVEs
Summary
Remote code execution vulnerability in Microsoft SQL Server. An attacker could exploit it to execute arbitrary code on the server.
Risk Assessment
Risk of database server takeover and data breach.
Recommendation
Install the latest security updates for SQL Server.
Other vulnerabilities in Microsoft SQL Server
See all- CVE-2016-7249High
Microsoft SQL Server 2016 does not properly perform a cast of an unspecified pointer, allowing remote authenticated users to gain privileges via unknown vectors.
- CVE-2026-67643Critical
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-67631Critical
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
- CVE-2019-1068HighActively exploited
A remote code execution vulnerability exists in Microsoft SQL Server due to improper handling of internal functions. An attacker could exploit it to execute arbitrary code on the server.
- CVE-2000-0402Low
The vulnerability in Microsoft SQL Server 7.0 allows the Mixed Mode authentication mechanism to store the System Administrator (sa) account password in plaintext in a log file, which is accessible to any user.
- CVE-1999-0999Medium
Microsoft SQL 7.0 server allows a remote attacker to cause a denial of service via a malformed TDS packet.
- CVE-2026-94512High
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network. The vulnerability can be exploited remotely, posing a serious threat to system integrity.
- CVE-2026-88088High
Integer overflow or wraparound in SQL Server allows an authorized attacker to elevate privileges locally. The vulnerability can be exploited to gain higher privileges on the system.
- CVE-2026-88083High
Stack-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network. The vulnerability can be exploited remotely without authentication, posing a serious threat.
- CVE-2026-88082High
Heap-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges locally. The vulnerability can be exploited to gain higher privileges on the system.
Original NVD description (English source)
Microsoft SQL Server Remote Code Execution Vulnerability
Vulnerability data from NVD (NIST) · CISA KEV · EPSS