CVE-2025-55227
Published: 09 September 2025
Summary
CVE-2025-55227 is a high-severity Command Injection (CWE-77) vulnerability in Microsoft Sql Server 2016. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 31.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly requires input validation to neutralize special elements and prevent command injection exploits in SQL Server.
Mandates identification, reporting, and correction of flaws like this command injection vulnerability through timely patching as per Microsoft's guidance.
Enforces least privilege to limit the impact of privilege escalation even if command injection succeeds from low-privilege accounts.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Command injection (CWE-77) in SQL Server directly enables remote exploitation for privilege escalation (T1068) and exploitation of a network-accessible application (T1190).
NVD Description
Improper neutralization of special elements used in a command ('command injection') in SQL Server allows an authorized attacker to elevate privileges over a network.
Deeper analysisAI
CVE-2025-55227 is an improper neutralization of special elements used in a command, resulting in command injection (CWE-77), affecting SQL Server. Published on 2025-09-09T17:16:05.900, the vulnerability has a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
An authorized attacker with low privileges (PR:L) can exploit this vulnerability over the network (AV:N) with low complexity (AC:L) and no user interaction (UI:N). Successful exploitation enables privilege escalation, granting high impacts on confidentiality (C:H), integrity (I:H), and availability (A:H) without changing scope (S:U).
Microsoft's update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55227 provides details on mitigation and patches for this vulnerability.
Details
- CWE(s)