Security readout for executives and security teams
Plain-English summary
CVE-2026-26116 is a high-severity Microsoft SQL Server privilege escalation flaw. An already authorized attacker could use SQL injection over the network to gain higher privileges. For organizations running the listed SQL Server 2025 builds, this is business-relevant because successful exploitation could affect confidentiality, integrity, and availability of database systems.
Executive priority
Prioritize remediation for affected SQL Server 2025 systems, especially internet-exposed or broadly reachable database servers. The flaw requires an authorized attacker, but the potential impact spans data theft, data modification, and service disruption.
Technical view
The issue is CWE-89: improper neutralization of special elements in SQL commands. Microsoft rates it CVSS 8.8 with network attack vector, low complexity, low privileges required, and no user interaction. Affected entries are Microsoft SQL Server 2025 CU 2 version 17.0.0.0 and SQL Server 2025 x64 GDR version 17.0.1050.2.
Likely exposure
Exposure is limited to environments running the affected Microsoft SQL Server 2025 versions identified by Microsoft. The attacker must already be authorized, but the attack is network-reachable and does not require user interaction.
Exploitation context
The source bundle does not show CISA KEV listing, and the CVSS exploit maturity is marked unproven. There is no cited evidence of active exploitation. Treat this as a patch-priority database risk, not a confirmed in-the-wild campaign.
Researcher notes
Evidence is limited to the CVE record and Microsoft advisory metadata in the provided bundle. No public exploit details or exploitation claims are cited. Validation should focus on version/build identification, update status, exposure paths, and privilege boundaries.
Mitigation direction
- Review Microsoft’s advisory for the applicable SQL Server update path.
- Prioritize patching affected SQL Server 2025 CU 2 and x64 GDR systems.
- Restrict network access to SQL Server from only required systems.
- Review database account privileges and reduce unnecessary elevated access.
Validation and detection
- Inventory SQL Server instances and record exact version/build numbers.
- Compare installed builds against Microsoft’s affected versions.
- Confirm the Microsoft security update is installed where applicable.
- Check whether SQL Server is reachable from untrusted network segments.
- Review privileged database accounts for unnecessary access.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-26116 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- SQL Server Elevation of Privilege VulnerabilityCVE reference · vendor-advisory, patch
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.